Weather in San Diego in March 2025
Average weather
Average temperature in San Diego in March
The temperature in March is +16°C on average, with a range between a maximum of +23°C during the day and a minimum of +6°C at night.
The average maximum temperature goes up 12% by the end of the month, compared with the beginning of the month, from +14°C to +16°C.
Is San Diego warm or cold in March?
San Diego is typically mild in March.
Maximum temperatures go up compared to the previous month from +18°C to +19°C. The minimum temperature also goes up from +11°C to +12°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how March is compared to other months in San Diego:
Water temperature in San Diego in March
Water in San Diego in March is Cold. It varies from +14°C to +17°C, with an average of +15°C. This is almost similar to the air temperature, which averages +19°C.
The water temperature in March is one of the coldest of the entire year:
Can you swim in San Diego in March?
Climate in San Diego in March
| February | March | April | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +18°C | +19°C | +20°C | ||||
| Min. temperature | ||||||
| +3°C | +6°C | +6°C | ||||
| Max. temperature | ||||||
| +30°C | +31°C | +35°C | ||||
| Rainfall | ||||||
| 84 mm | 64 mm | 27 mm | ||||
| Wind | ||||||
| 2 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +15°C | +15°C | +16°C | ||||
| Humidity | ||||||
| 68% | 70% | 70% | ||||
| Air pressure | ||||||
| 1017 HPa | 1016 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 7 | 6 | 7 | ||||
| Cloudy days | ||||||
| 11 | 14 | 15 | ||||
| Rainy days | ||||||
| 10 | 10 | 8 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
March weather is still as good as in February. It’s getting warmer as March arrives. The average maximum temperature goes up from +18°C to +19°C during the day. As March arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 84 mm to 64 mm. Humidity rises from 68% to 70%. Winds are stronger in comparison to February, going up from 2 m/s to 3 m/s on average. The days becoming less sunny, going from 7 sunny days in February to 6 in March.
April brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 7 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 March, going from 7 m/s to 3 m/s over the course of the month.
Rain
How was the weather last March in San Diego?
Climate Change over Years
The climate in San Diego in March 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 March a good time to visit San Diego?
Can you sunbathe in San Diego in March?
Can you swim in San Diego in March?
Is San Diego rainy in March?
Is it sunny in San Diego in March?
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.