Measurements:
°C
°F
San Diego
54°F
S 6 mph
Feels like: 52°F
Precip: 0%
World Resorts USA San Diego Weather May Weather in San Diego

San Diego Weather: May

Average Day Temperature: 69.3°F
Average Night Temperature: 60.3°F
Sea Water Temperature: 65.0°F
Number of Sunny Days: 16 days
Sunshine Hours: 13.5 - 14.2 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.5 in

Air Temperature in May, °F

Select Year: 2025 2024 2023

The highest day temperature in May 2025 was 85°F. The lowest night temperature was 56°F. The average values for day and night temperatures during May were 69.8°F и 60.5°F respectivly.

San Diego Water Sea Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for San Diego was 64.5°F. The maximum and minimum values were 60.4°F and 68.6°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in May, in

Precipitation total in May for San Diego is 0.5 in.

Wind Speed in May, mph

The average wind speed in May is 7.5 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for San Diego in May is 9.4 hours.

Best Time to Visit San Diego
The most sunny months:
July 21 days
June 20 days
August 20 days
The most warm months:
August 82.1 °F
September 81.0 °F
July 79.1 °F
Warmest sea temperature:
August 72.1 °F
September 71.1 °F
July 70.8 °F
The most cold months:
January 64.7 °F
December 64.8 °F
February 64.8 °F
The most rainy months:
March 2 days
February 2 days
December 2 days
The most windy months:
May 7 mph
April 7 mph
March 7 mph

San Diego on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
San Diego
Local time: 23:58
05 dec, friday
0000 54°F
S
6 mph
0300 52°F
S
2 mph
0600 46°F
SW
1 mph
0900 52°F
SW
1 mph
1200 70°F
E
5 mph
1500 72°F
SE
8 mph
1800 66°F
E
7 mph
2100 60°F
SE
4 mph