Weather in San Diego in April 2025
Average weather
Average temperature in San Diego in April
The temperature in April is +18°C on average, with a range between a maximum of +26°C during the day and a minimum of +8°C at night.
The average maximum temperature goes down 6% by the end of the month, compared with the beginning of the month, from +18°C to +17°C.
Is San Diego warm or cold in April?
San Diego is typically mild in April.
Maximum temperatures go up compared to the previous month from +19°C to +20°C. The minimum temperature also goes up from +12°C to +14°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how April is compared to other months in San Diego:
Water temperature in San Diego in April
Water in San Diego in April is Cold. It varies from +15°C to +17°C, with an average of +16°C. This is almost similar to the air temperature, which averages +20°C.
In April, water temperatures are average relative to the rest of the year:
Can you swim in San Diego in April?
Climate in San Diego in April
| March | April | May | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +19°C | +20°C | +20°C | ||||
| Min. temperature | ||||||
| +6°C | +6°C | +10°C | ||||
| Max. temperature | ||||||
| +31°C | +35°C | +36°C | ||||
| Rainfall | ||||||
| 64 mm | 27 mm | 10 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +15°C | +16°C | +17°C | ||||
| Humidity | ||||||
| 70% | 70% | 72% | ||||
| Air pressure | ||||||
| 1016 HPa | 1015 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 6 | 7 | 4 | ||||
| Cloudy days | ||||||
| 14 | 15 | 21 | ||||
| Rainy days | ||||||
| 10 | 8 | 7 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
April weather is still as good as in March. It’s getting warmer as April arrives. The average maximum temperature goes up from +19°C to +20°C during the day. As April arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 64 mm to 27 mm. Humidity levels don’t change as the month goes on, averaging around 70%. The average wind speed doesn’t change much during April, staying around 3 m/s. The good news is there are likely to be more sunny days in April, from 6 to 7.
May brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in San Diego is gradually decreasing during April, going from 3 m/s to 2 m/s over the course of the month.
Rain
How was the weather last April in San Diego?
Climate Change over Years
The climate in San Diego in April has not changed much over the last 43 years.
The average temperature was the lowest in 2001 (+19°C) and the highest in 2014 (+23°C). The driest year was 2002 with only 156 mm of rainfall, and the wettest year was 2023 with 1311 mm.
FAQ
Is April a good time to visit San Diego?
Can you sunbathe in San Diego in April?
Can you swim in San Diego in April?
Is San Diego rainy in April?
Is it sunny in San Diego in April?
Other cities in USA
Monthly weather in San Diego
Source of the data
For this page, we’ve looked at the typical weather in San Diego, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.