Measurements:
°C
°F
CURRENT WEATHER
16:05
San Diego
88°F
SE 11 mph
Feels like: 90°F
Precip: 2%
World Resorts USA San Diego Weather

7 Day Weather Forecast

10.05
mon
DAY
90°F
E 9 mph
precip
1%
NIGHT
82°F
SE 6 mph
precip
4%
10.06
tue
DAY
86°F
E 7 mph
precip
2%
NIGHT
80°F
SE 6 mph
precip
5%
10.07
wed
DAY
84°F
E 7 mph
precip
3%
NIGHT
78°F
SE 5 mph
precip
5%
10.08
thu
DAY
84°F
E 8 mph
precip
2%
NIGHT
78°F
SE 7 mph
precip
5%
10.09
fri
DAY
82°F
SE 9 mph
precip
2%
NIGHT
78°F
SE 7 mph
precip
16%
10.10
sat
DAY
80°F
E 11 mph
precip
5%
NIGHT
76°F
E 7 mph
precip
18%
10.11
sun
DAY
76°F
NE 7 mph
precip
5%
NIGHT
72°F
NE 6 mph
precip
13%

San Diego Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for San Diego was 18.8°F. The maximum and minimum values were 17.3°F and 19.8°F respectively.

San Diego on the Weather Map

Best Time to Visit San Diego
The most sunny months:
November 20 days
July 20 days
August 20 days
The most warm months:
August 82.5 °F
September 81.0 °F
July 79.4 °F
Warmest sea temperature:
August 72.2 °F
September 71.5 °F
July 70.9 °F
The most cold months:
January 65.1 °F
December 65.2 °F
February 65.3 °F
The most rainy months:
March 2 days
February 2 days
January 2 days
The most windy months:
May 7 mph
April 7 mph
March 7 mph
more details