Weather in San Diego
What's the weather like in San Diego?
San Diego has a moderate climate and low overall rainfall. Average daytime highs range from 18°C (64°F) in January to 25°C (76°F) in July, with overnight lows around 9°C (48°F) and 18°C (65°F) respectively.
For comfortable sightseeing temperatures (18–26°C daytime highs), the best months to visit San Diego are January through November.
Quick facts
- Country
- 🇺🇸 United States
- Region
- North America
- Time zone
- America/Los_Angeles
- Coordinates
- 32.716, -117.161
Monthly climate
Long-run averages for each month of the year.
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 18°C / 64°F | 9°C / 48°F | 62 mm | 8 | — |
| February | 18°C / 65°F | 9°C / 48°F | 48 mm | 8 | — |
| March | 19°C / 65°F | 11°C / 51°F | 44 mm | 11 | — |
| April | 20°C / 68°F | 13°C / 55°F | 22 mm | 8 | — |
| May | 20°C / 68°F | 14°C / 58°F | 16 mm | 9 | — |
| June | 22°C / 72°F | 16°C / 61°F | 2 mm | 4 | — |
| July | 25°C / 76°F | 18°C / 65°F | 5 mm | 2 | — |
| August | 26°C / 78°F | 19°C / 66°F | 9 mm | 3 | — |
| September | 26°C / 78°F | 18°C / 65°F | 11 mm | 5 | — |
| October | 24°C / 76°F | 16°C / 60°F | 10 mm | 5 | — |
| November | 21°C / 70°F | 12°C / 53°F | 28 mm | 6 | — |
| December | 18°C / 64°F | 9°C / 48°F | 63 mm | 8 | — |
San Diego by month
Detailed weather for any specific month:
Seasonal patterns to know
Atlantic hurricane season runs June–November (peak August–October). Tropical storms and hurricanes are possible — peak risk is August–October.
Cities with a similar climate to San Diego
Frequently asked questions
When is the best time to visit San Diego?
The most comfortable months in San Diego are usually June, July, November, when average highs sit near 18–26°C (64–79°F) with relatively little rain. See the full month-by-month breakdown for the exact figures.
What is the hottest month in San Diego?
September is typically the hottest month in San Diego, averaging a high of 26°C (78°F).
What is the coldest month in San Diego?
January is usually the coldest, with average lows around 9°C (48°F).
Does it snow in San Diego?
Snow is rare in San Diego; the climate data shows essentially no snowfall across the year.
Live forecast, sunrise/sunset, and more.