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San Diego

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Travel Info
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Travel Info

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San Diego Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

San Diego year round climate

  • Spring (March–May): Average 14.8–17°C, mild and comfortable climate, less rainfall, abundant sunshine. Common activities: Outdoor activities, beach walks, sightseeing. Recommended clothing: Light jacket, long-sleeved shirts, comfortable shoes.
  • Summer (June–August): Average 19.1–23°C, hot and dry weather, abundant sunshine, very little rainfall. Common activities: Swimming, surfing, sunbathing, outdoor BBQ. Recommended clothing: Light and breathable clothing, hat, sunglasses, sunscreen.
  • Autumn (September–November): Average 19.7–15.8°C, pleasant climate, warm days, cool nights, little rainfall. Common activities: Hiking, viewing autumn leaves, enjoying seafood. Recommended clothing: Light jacket or cardigan, long-sleeved shirts or T-shirts.
  • Winter (December–February): Average 13.5–14.3°C, mild climate, occasional rainfall, but generally warm. Common activities: Whale watching, visiting museums, enjoying food. Recommended clothing: Light jacket, long-sleeved shirts, thermal underwear.

San Diego climatological average

Annual average temperature: approx. 17.6°C / Annual rainfall: approx. 267 mm / Summer humidity: 60%–70% / Rainiest month: January

San Diego monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
13.5°C
76
February
13.8°C
59.7
March
14.8°C
69
April
16.2°C
2.7
May
17°C
1.7
June
19.1°C
0.3
July
21.4°C
0
August
23°C
15.7
September
22.7°C
6.3
October
19.7°C
0.7
November
15.8°C
15.3
December
14.3°C
20

San Diego weather for the next seven days

12/18
Thursday
Sunny
29.7°C/10°C
12/19
Friday
Partly Cloudy
20.2°C/13.2°C
12/20
Saturday
Partly Cloudy
18.4°C/11.8°C
12/21
Sunday
Overcast
20.8°C/16.1°C
12/22
Monday
Sunny
21.3°C/16.4°C
12/23
Tuesday
Partly Cloudy
19.1°C/16.6°C
12/24
Wednesday
Patchy rain nearby
19.2°C/17.1°C

San Diego Frequently Asked Questions and Useful Information for Travel

What is the best month to go to San Diego?

The fall months of September and October are often considered the best time to visit San Diego, offering a combination of excellent weather, Santa Ana breezes, fewer crowds, and affordable rates compared to peak summer. Spring (March to May) also presents good conditions for a visit, with mild weather, blooming flowers, and lower prices.

Is San Diego worth visiting as a tourist?

San Diego is absolutely worth visiting. Aptly nicknamed “America's Finest City,” it boasts an enviable mix of sandy beaches, sunny weather, and an array of attractions that appeal to just about everyone.

What is the first must do in San Diego?

The number one stop on any visitor's guide to San Diego, especially if it's your first visit, is the San Diego Zoo. This renowned zoo is spread over 100 acres of verdant land filled with over 3,000 animals and 800 species from all corners of the globe.

What is the number one tourist attraction in San Diego?

Balboa Park is the number one tourist attraction in San Diego. Known as the “Smithsonian of the West,” this urban park is a world unto itself. If you could only choose one thing to do in San Diego, a visit to Balboa Park is highly recommended.

What are some other popular attractions in San Diego?

Beyond the world-famous San Diego Zoo and Balboa Park, visitors flock to the beautiful beaches of La Jolla, the historic Gaslamp Quarter, and the USS Midway Museum for a taste of maritime history.