San Diego Weather

~
The Sunny City by the Sea
~
Learn about San Diego’s weather patterns and find out the best times to visit. With year-round sunny skies & mild temperatures, your San Diego vacation awaits!
San Diego Weather
Best Time to Visit
The Seasons
The Temperature
Rainfall
Humidity
Sunshine vs. Daylight
Cloudiness
Ocean Temperatures
Seasonal Events
Stay in San Diego
Popular Beaches

Highlights

Best Time of Year
Tempature Chart
Sunshine Chart
Ocean Water Temp Chart
Best Time of Year
Tempature Chart
Sunshine Chart
Ocean Water Temp

San Diego is the Perfect Year-Round Destination

Sunset of the Coronado Bridge Over San Diego BayPumpkins and Squash at Farmers Market in the Fall

Southern California is blessed with some of the best year-round weather in the United States with sunny skies, minimal rain and comfortable temperatures. It’s that beautiful weather that makes San Diego such a popular destination where there's always something memorable to see and do.

The entire region, from Los Angeles to the Mexican border and all of San Diego County is blessed with an enviable temperate climate, with many days of clear blue skies and plenty of year-round sunshine; whatever the season when you choose to visit, you'll have endless ways to enjoy our laid-back outdoor lifestyle.

Take in our spectacular coastline and world-renowned beaches, or head to the cool mountains and stunning natural desert scenery of the inland zones – no matter what part of San Diego you pan to visit, you'll surely find the perfect weather for your vacation!

Popular Hotels in San Diego
Popular Hotels
Price
Hotel del Coronado, Curio Collection by Hilton
$325
Check Price
The Westin San Diego Gaslamp Quarter
$143
Check Price
Wyndham Oceanside at the Pier
$171
Check Price
Tower 23 Hotel
$289
Check Price

Anytime is the Best Time to Visit San Diego!

San Diego is famous for its great weather all year-round. No matter which part of the region you want to explore, it's free from extremes of heat or cold.

Anza Borrego State Park Spring Bloom in the Desert

In Spring, the desert blooms!

As the cooler winter months pass, the days get longer, and so do the hours of sunshine! Mild temperatures across the entire region mean it's the perfect time to explore.

Take advantage of the mild temperatures and sunny skies by visiting some of the popular attractions around San Diego such as the world-famous San Diego Zoo or many museums in Balboa Park, LEGOLAND California in Carlsbad or SeaWorld San Diego in Mission Bay.

With so much to see and do, not to mention great weather at the beaches, consider getting a Go San Diego pass for you and your family before your trip. With the pass, you can save big on admission prices to the major attractions throughout San Diego as well as on gear rentals such as snorkel gear, surfboard rentals and bike rentals.

Take advantage of additional savings, when you buy your pass in advance if you purchase your pass via our website!

Summer in San Diego

Even the arrival of the summer heat won't deter you from enjoying the sun. Head to the beach and cool off in the refreshing surf. Cool down when the sun is at its highest in one of the many fabulous beachside restaurants, enjoy the thrills of the heritage funfair rides at Belmont Park, or just enjoy browsing around some of the quirky designer boutiques and galleries.

Fall in Love with Fall

By September, as the tourists head home, San Diego starts to cool off slightly. Beaches and tourist attractions are free of large crowds, and the locals relax under the gorgeous blue skies. The sea waters also cool down a little, but the surf is still inviting.

A Place Where Winter Doesn’t Exist

And in winter? Well, there really is no such thing as winter in San Diego! Yes, it cools down a little, and yes, there may be a few short bursts of rain here and there, but overall, you can expect the skies to stay clear and blue. With average temperatures only bottoming out in the 50’s, it will leave you reaching for a light sweater in the evening hours rather than a winter coat and gloves.

San Diego Weather Forecast

September
66℉ / 82℉
Sunny in September
October
61℉ / 81℉
Sunny in October
November
53℉ / 75℉
Sunny in November

The Seasons in San Diego

Close up of Flowers at the Flower Fields

Spring

With mild temperatures typically in the mid-'70s, and clear blue skies, you'll not only be comfortable sightseeing, but you'll also be able to take great selfies with your family.

There's hardly any rain at this time of year in March, April and May, so whether you stay in the city, relax by the ocean, or head for the mountains around Julian, you'll avoid the crowds while basking in the sunshine and really making the most of that Southern California outdoor lifestyle.

Summer at North Pacific Beach

Summer

In the summer months of June, July, and August, the tourist season reaches its peak. The average temperature in the city peaks at around 75 degrees, with relatively high humidity.

Inland it's somewhat warmer with high temperatures in the desert often reaching above 100 degrees during the day and dipping around 30 degrees to the 70’s during the overnight hours.

Kids Playing at Seacape Beach in Solana Beach

Fall

As the mercury falls, signaling the end of summer, the tourists head home, and the city prepares to come out and party! The weather is perfect for sightseeing, hiking, swimming (still), and generally exploring every corner of the city.

Plan a full-day trip to the world-famous San Diego Zoo, or maybe an exciting day enjoying top-flight horse-racing at the Del Mar Thoroughbred Club.

Wintertime at Swamis in Encinitas

Winter

If you love exploring, the winter months of January, February and March are the ideal season to visit. The climate is still mild, and although you may experience a few rain showers, they'll most likely be brief and refreshing. The sun will soon be back out, and the sky clear and blue.

While December and January hold the distinction as the months with the least number of daylight hours, they also carry the prize as the months with the highest sunshine percentage of the entire year. January averages 74% sunshine and December averages a whooping 75% sunshine during the daylight hours!

Explore the city on foot, maybe visit San Diego’s many museums, or head out to La Mesa's uplands, the mountains around Julian or head to the desert and Borrego Springs to really get to know the region.

Featured Hotel
The US Grant, a Luxury Collection Hotel, San Diego
Exterior view, The US Grant, a Luxury Collection Hotel, San Diego
Historic
Historic
Luxury
Luxury
Near Bay
Near Bay
5 Stars5 Stars5 Stars5 Stars5 Stars
History and luxury mix beautifully at US Grant, A Luxury Collection Hotel, San Diego. Located in the Gaslamp Quarter, this distinctive hotel pampers every guest.
Prices Starting at $265
Check Availability

The Temperature in San Diego

The whole region is blessed with a climate that rarely experiences extremes of temperature, although inland areas can experience hot spells during the summer months.

Coastal
Coastal Inland
Upland Central
Transition
Mountain
Desert

San Diego Coastal - Temperature Averages (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Max
67°
68°
69°
71°
70°
73°
77°
79°
79°
78°
73°
68°
Min
51°
53°
56°
59°
60°
63°
67°
69°
67°
63°
56°
51°

Year-round maximum temperatures range from the high 60s to the 70s in August and September and rarely drop below the low 50s in winter.

San Diego Coastal Inland - Temperature Averages (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Max
68°
69°
70°
73°
70°
76°
81°
83°
82°
81°
75°
69°
Min
48°
49°
52°
55°
58°
62°
66°
68°
66°
61°
53°
48°

The coastal inland area tops out with high temperatures in the summer afternoons or July through October in the low 80s with low temperatures bottoming just below 50 degrees in the winter months of December, January and February.

San Diego Upland Central - Temperature Averages (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Max
67°
69°
70°
75°
71°
77°
83°
85°
83°
81°
74°
67°
Min
50°
50°
52°
55°
56°
60°
64°
65°
64°
61°
54°
49°

In the areas of Poway and La Mesa, it's a similar picture in the winter months, though it can climb to the mid-to-high 80s in the summer months.

San Diego Transition - Temperature Averages (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Max
66°
68°
70°
74°
74°
85°
91°
92°
87°
83°
75°
67°
Min
39°
39°
41°
44°
50°
54°
59°
59°
56°
49°
42°
37°

In the transition zone, the mercury can climb into the 90s with pleasant average high temperatures from November until May. Interestingly, Ramona experiences some of the lowest winter temperatures, dropping down as low as 37 degrees in December.

You can expect that only on rare occasions will the temperature drop down below 50 degrees in most regions, even at night.

San Diego Mountain - Temperature Averages (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Max
54°
56°
59°
64°
68°
81°
86°
92°
87°
83°
62°
54°
Min
39°
39°
43°
45°
47°
58°
63°
59°
56°
51°
46°
39°

With the increase in elevation, the mountain area in and around Julian has some of the widest range of temperature variance in all of San Diego with highs for the year averaging 86 degrees in the summer months of July and August and average low temperatures dipping just below 40s in the winter months of December, January and February.

San Diego Desert - Temperature Averages (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Max
70°
74°
80°
87°
92°
104°
108°
107°
99°
90°
79°
69°
Min
47°
49°
53°
58°
61°
72°
78°
79°
72°
63°
53°
46°

In the desert around Borrego Springs, an average temperature of well over 100 degrees is not uncommon in June, July, and August. However, you can still expect comfortable low temperatures in the 70’s overnight even during the warm summer months.

San Diego is known worldwide for having great weather and a big part of that is its temperate climate, complete with comfortable temperatures in all areas year-round.

While high temperatures can reach over 100 degrees in the summer months in the desert and just below 40 degrees at night in the winter months primarily in the transition, mountain and desert areas, you can expect relatively mild temperatures in the 60s and 70s to be available almost any time of the year for your visit to San Diego.

Rainfall in San Diego

Rainfall is minimal throughout all areas of San Diego with passing showers in the winter months and almost no recorded rain many years in the summer months.

Coastal
Coastal Inland
Upland Central
Transition
Mountain
Desert

San Diego Coastal - Rainfall Averages (Inches)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Rain
1.95"
1.37"
1.02"
0.74"
0.78"
0.10"
0.29"
0.10"
0.35"
0.21"
1.14"
2.44"

The coastal region around San Diego experiences around 10 inches of rainfall per year. In December, January and February, there may be between 1 and 2 inches per month.

San Diego Coastal Inland - Rainfall Averages (Inches)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Rain
1.80"
2.40"
1.00"
0.70"
0.30"
0.00"
0.10"
0.00"
0.20"
0.60"
0.90"
1.80"

In the coastal inland zone, around Montgomery Field, there is virtually no precipitation in the summer months, but in winter, there may be showers resulting in about 2 inches of rain per month.

San Diego Upland Central - Rainfall Averages (Inches)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Rain
2.60"
2.30"
2.70"
1.00"
0.30"
0.10"
0.00"
0.10"
0.20"
0.60"
1.30"
1.40"

The central upland zone of La Mesa experiences a similar pattern - dry for 6 months of the year, then an average of 2 inches of rainfall per month, from November through to March.

San Diego Transition - Rainfall Averages (Inches)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Rain
3.50"
3.50"
3.20"
1.20"
0.40"
0.10"
0.10"
0.20"
0.30"
0.70"
1.30"
1.70"

In the transition zone, Ramona averages slightly more rainfall, at about 3 inches during each of the 4 winter months.

San Diego Mountain - Rainfall Averages (Inches)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Rain
3.90"
5.00"
3.00"
1.50"
0.60"
0.10"
0.10"
0.20"
0.30"
1.20"
2.00"
3.10"

Thinking of heading up to the mountains near Julian? Here, you're more likely to encounter some precipitation in the winter months (3-4 inches per month), but Spring and Fall are dryer, and in the summer, a downpour would be a special occasion.

San Diego Desert - Rainfall Averages (Inches)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Rain
1.20"
1.30"
0.70"
0.20"
0.10"
0.00"
0.30"
0.50"
0.30"
0.30"
0.40"
0.80"

In the desert area around Borrego Springs, rainfall is negligible all year-round, with an average of less than 1 inch per month even through the winter season.

So, given the dry and pleasant climate that the San Diego region basks in for most of the year, you'll be able to get the most from your visit no matter when you choose to come. Clear blue skies are waiting for you!

Humidity in San Diego

San Diego experiences relatively high levels of humidity throughout the year with an average humidity for the year at 69% as reported in the coastal area at the San Diego International Airport. The months from July to September are generally when the weather can feel muggy at times with humidity levels averaging in the mid-70s.

However, muggy air is rare, and even in the peak of the summer, humidity levels are estimated to remain at a comfortable level for over 93% of the time. So, whether it's some gentle sightseeing or extreme sports you're planning, you won't be limited as to the range of outdoor activities you can do.

San Diego Coastal - Humidity Averages

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
HMD
63%
66%
67%
67%
71%
74%
75%
74%
73%
69%
66%
64%

Sunshine Hours vs. Daylight Hours in San Diego

If great weather is one of your priorities for a vacation, there are few better places to come than San Diego. In the summer months of June, July and August when there are close to 13.5 and 14.5 hours of daylight each day, expect between 8 and 10 hours of these to be filled with clear skies and bright sunshine. In winter, when the days are shorter with around 10 to 11 hours of daylight each day, you can still expect it to be sunny for approximately 75% of the time!

In fact, the only months when the average hours of sunshine fall below 60% are May and June, and they still have clear blue skies for an average of 55-56% of the daytime!

San Diego Daylight vs Sunshine Hours

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
DAYLIGHT
(HRS)
10.3
11
12
13
13.9
14.3
14.1
13.3
12.4
11.3
10.5
10
SUNSHINE
(HRS)
7.6
8
8.5
9.4
7.8
8.2
9.9
9.6
8.1
7.9
7.7
7.5
PERCENT SUNSHINE
74%
73%
71%
72%
56%
57%
70%
72%
65%
70%
73%
75%

Cloudiness in San Diego

As you can see from the chart, San Diego, as reported from San Diego International Airport - Lindbergh Field in the coastal area, is blessed with, on average, 146 clear days per year, with a further 117 being classified as 'partly cloudy' during daylight hours.

May and June are the months most likely to experience thin cloud cover and haze in the mornings. April, May and June being classified as ‘partly cloudy months’, still averaging 8 to 10 days each month of completely clear and sunny skies!

San Diego Coastal Cloudiness Weather Chart

Mean # of Days: Clear, Partly Cloudy & Cloudy
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
CLEAR
(DAYS)
12
10
11
10
8
9
13
15
15
14
15
14
PT CLOUDY
(DAYS)
7
8
9
10
11
12
13
12
10
10
8
8
CLOUDY
(DAYS)
11
10
11
10
11
9
5
4
6
8
7
10

Ocean Water Temperatures

Scripps Pier
San Diego Bay
Oceanside

San Diego Ocean Water Temperature Averages
Scripps Pier (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Temp
58°
57°
58°
60°
62°
65°
67°
68°
66°
64°
61°
59°

The waters around Scripps Pier usually provide the benchmark ocean water temperatures around San Diego. The water's heat up from a minimum average of 55 to 57 degrees in the winter months, reaching a mild 67 to 68 degrees in the summer months of June, July, and August.

San Diego Ocean Water Temperature Averages
San Diego Bay (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Temp
59°
60°
62°
64°
67°
70°
71°
72°
71°
69°
65°
60°

San Diego has some of the finest beaches in the region, and they attract surfers and surf watchers from all over the world. In the San Diego Bay area, you can expect the warmest waters in the region.

Take your kayak out or go for a swim with a water temperature at a minimum of 59 degrees in the winter month of January and temperatures rising rapidly and remain in the low 70's between June and September.

San Diego Ocean Water Temperature Averages
Oceanside (°F)

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Temp
57°
57°
58°
60°
62°
65°
67°
69°
67°
64°
61°
59°

The picture is pretty much the same as for Scripps Pier, with the temperature ranging from around a pleasant 57 to 58 degrees in January and February, to a maximum of 69 degrees by August and September.

Tides

There are two high tides along the coastal area and, unsurprisingly, two low tides per day. There are many features, such as tide pools, caves, and even natural arches, formed over millennia to explore at low tides. Select beaches in San Diego may only be accessible at low tides.

For surfers, the best waves tend to be on an incoming tide, but this does depend on the break. If you choose the perfect moment, that is, in the middle of a rising tide, you can expect a couple of hours of almost-perfect waves for an unforgettable challenge!

Save BIG with Go Pass!
Orangutan at San Diego Zoo
The World Famous San Diego Zoo
Explore the top zoo in America! The San Diego Zoo is located in iconic Balboa Park, and features over 3,500 animal in their habitats. Bundle with other attractions in Balboa Park for top savings - like the Air and Space Museum!
Buy Now
Local Tips
What attractions are included with a Go Pass?

Attractions that you can visit with a Go San Diego Pass include:

The San Diego Zoo, Birch Aquarium, SeaWorld, Safari Park, LEGOLAND, Harbor Cruise, USS Midway Museum, the NAT Museum, Whaley House, PETCO Park Tour, iFLY San Diego and many, many more!

The Reason San Diego Weather is so Mild

San Diego's excellent climate is often referred to as being 'Mediterranean.' That's no surprise, really, considering it is situated on the same latitude as Italy, Greece, and Spain and is, therefore, the same distance from the equator.

The year-round mild temperatures, even in the height of summer, can be attributed to the Maritime Effect from the Pacific Ocean, the effect the ocean and coastline has on the weather.

In the summer, ocean currents from thousands of miles away are cool and have the effect of lowering the temperatures on the nearby areas of San Diego and keeping the weather dry.

In the winter, the currents are warmer, which means that the air passing over them isn't cooled down as much and prevents the land from becoming too cold. They also bring welcoming rain. The result is mild winters and relatively cool summers and a cool sea breeze along the coast for much of the year.

Climate Change in San Diego

Along with the rest of California, and the western USA, the region is already feeling the dramatic effects of climate change. As the oceans heat up and sea levels rise, possible effects could include heavier rainfall and longer wildfire seasons in the whole of Southern California.

While the spectacular cliffs along San Diego's coastline could act as a natural barrier against flooding, the climate change will directly affect San Diego in a negative way and is something we should do our part now to slow or stop to protect the future of San Diego.

Popular Activities
San Diego Harbor Cruise
San Diego Harbor Cruise
$28 per person
Buy Now
Guided La Jolla Sea Cave Kayak Tour
Guided La Jolla Sea Cave Kayak Tour
$54 per person
Buy Now
Surf Lessons in La Jolla
Surf Lessons in La Jolla
$69 per person
Buy Now

Seasonal Events

June Gloom and May Gray

May Gray and June Gloom are weather patterns, much resented by Southern Californians, who expect clear skies throughout the year. They're created by high air pressure, which causes clouds to get trapped right above the city.

The climate is still warm and pleasant; it just tends to become a little more overcast, especially in the mornings, when the clouds are lower. It doesn't stop people heading to the beaches in their droves, or still enjoying the relaxed outdoor lifestyle, though.

Fog

Between May and late August, San Diego experiences marine layer clouds, which are caused by the cooling effect of the ocean on the warm air above it. The result can be cloudy skies and patchy fog conditions, typically in the mornings.

As the temperature rises, the sun's heat generally causes the moisture in the air to evaporate, but sometimes the haze can last deep into the day.

El Niño & La Niña

These intricate weather patterns, which impact ocean temperatures and every aspect of the global climate, were first noted by South American fishermen in the 1600s. They recur, on average, every 2 to 7 years.

El Niño typically affects North America during the winter, bringing higher than average temperatures and greater than average rainfall over the western USA, including San Diego. Water temperatures tend to rise with the advent of an El Nino event.

La Nina events produce opposite effects, so they typically bring with them cooler temperatures and less precipitation. The temperature of the ocean waters will also be lower than average during La Nina years.

Santa Ana Conditions

The Santa Anas are strong winds that blow down from the mountains, across the great basin and the Mojave Desert, towards the Pacific Ocean.

They most often occur in the Fall but have been known to appear at other times of the year. With wind speeds that can exceed 64km/h, these hot, dry air currents can have a catastrophic effect on wildfires, especially after the summer droughts and at times when rainfall is still scarce.

Where You Can Get the Latest Forecast

When arranging your next family vacation, couples’ weekend or business trip to San Diego, it’s important to know what to expect from the weather based on the time of year you are planning to arrive. The monthly and seasonal forecasts do vary based on time of year but the day-to-day forecasts in San Diego are usually very similar – great temperatures and lots of sunshine!

Forecasters from the local television networks as well as online will provide the latest 7-day forecasts in advance of your travels. You can also get the very latest using one of the many popular weather apps such as the weather channel app or weather apps installed directly for Apple and Android phones and tablets.

Rest assured knowing that most of the year in San Diego is sunny and mild with a cool breeze by the coast and mild average temperatures, peaking in the 60’s and 70’s in the afternoons and dipping 10-15 degrees for overnight lows.

This Month's Forecast
68℉ / 83℉
Sunny in August
Sep
66℉ / 82℉
Sunny in September
Oct
61℉ / 81℉
Sunny in October
Nov
53℉ / 75℉
Sunny in November

Stay in San Diego

Hotel del Coronado, Curio Collection by Hilton
Beachfront
4 Star Rating4 Star Rating4 Star Rating4 Star Rating
Hotel del Coronado, Curio Collection by Hilton
from $325 / night
View Hotel
The Westin San Diego Gaslamp Quarter
Family Friendly
4 Star Rating4 Star Rating4 Star Rating4 Star Rating
The Westin San Diego Gaslamp Quarter
from $143 / night
View Hotel
Wyndham Oceanside at the Pier
Near Camp Pendelton
3 Star Rating3 Star Rating3 Star Rating
Wyndham Oceanside at the Pier
from $171 / night
View Hotel
Tower 23 Hotel
Boutique Hotel
4 Star Rating4 Star Rating4 Star Rating4 Star Rating
Tower 23 Hotel
from $289 / night
View Hotel
Show more San Diego Hotels >>