Measurements:
°C
°F
CURRENT WEATHER
16:19
San Diego
68°F
SE 6 mph
Feels like: 68°F
Precip: 0%
World Resorts USA San Diego Weather

7 Day Weather Forecast

12.17
wed
DAY
68°F
SE 3 mph
precip
0%
NIGHT
58°F
S 2 mph
precip
0%
12.18
thu
DAY
72°F
E 2 mph
precip
0%
NIGHT
58°F
SE 2 mph
precip
0%
12.19
fri
DAY
68°F
E 3 mph
precip
0%
NIGHT
64°F
NE 2 mph
precip
0%
12.20
sat
DAY
68°F
NE 6 mph
precip
0%
NIGHT
62°F
N 2 mph
precip
0%
12.21
sun
DAY
70°F
NE 3 mph
precip
0%
NIGHT
66°F
SE 3 mph
precip
0%
12.22
mon
DAY
72°F
E 4 mph
precip
0%
NIGHT
66°F
NE 2 mph
precip
0%
12.23
tue
DAY
68°F
N 9 mph
precip
0%
NIGHT
64°F
NW 8 mph
precip
75%

San Diego Sea Water Temperature in December, °F

Select Year: 2025 2024 2023

The average sea surface temperature in December 2025 for San Diego was 17.1°F. The maximum and minimum values were 16.8°F and 17.7°F respectively.

San Diego on the Weather Map

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
more details