San Diego Weather in April
What's the weather like in San Diego (Cesar) in April 2026?
The climate in San Diego during April can be summarized as very hot and wet.
April is in the spring in San Diego and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a warm 35°C (95°F), whilst at night 23°C (73°F) is normal.
| Daytime temperature | 35.2°C 95.4°F |
|---|---|
| Nightly temperature | 22.8°C 73°F |
| Average temperature | 29°C 84.2°F |
| Daily sunshine | 7.1 hrs |
| Avg rainfall | 121 mm 4.7 ins |
| Rainy days | 4 days |
| Sea temperature | 26.7°C 80°F |
| Humidity | 66% |
| Windspeed | 14.4kph 9 mph |
On average April is the 6th driest month of the year in San Diego with around 121mm 4.7 inches of rain making it a wet time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.1 hours of sunshine per day.
April temperatures in San Diego
April rainfall
April hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Diego in April 2025.
Other monthly averages
San Diego weather stats
| Hottest month: | March | 35.3°C 95.5°F |
|---|---|---|
| Driest month: | January | 22mm 0.9ins |
| Sunniest month: | February | 9.2hrs |
| Coldest month: | October | 32.1°C 89.8°F |
| Wettest month: | October | 208mm 8.2ins |
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