Current sea water temperature:
+82.2°F
| Minimum sea water temperature in December: | 84.0°F |
| Maximum sea water temperature in December: | 79.7°F |
| Average sea water temperature in December: | 81.5°F |
| more information | |
14 days
forecast
forecast
| San Diego |
monthly
weather
weather
| San Diego |
Sea water temperature for the last 10 days:
| December 22 | 82.2°F | December 17 | 81.9°F |
| December 21 | 81.9°F | December 16 | 81.9°F |
| December 20 | 82.2°F | December 15 | 82.0°F |
| December 19 | 82.6°F | December 14 | 82.2°F |
| December 18 | 82.2°F | December 13 | 82.0°F |
Monthly sea water temperature, °F
When is the warmest sea in San Diego?
Based on the data about daily sea water temperature for the last three years the warmest sea in San Diego was noticed in September, October and August.
Monthly Sea Temperatures in San Diego, °F
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 84.8°F. The highest and lowest sea temperatures during the month were 85.8°F and 84.0°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 84.4°F. The highest and lowest sea temperatures during the month were 85.3°F and 83.8°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 84.3°F. The highest and lowest sea temperatures during the month were 85.6°F and 83.5°F.
current
weather
weather
| San Diego |
weather in
December
December
| San Diego |
Best time for vacation in San Diego
San Diego on a weather map
Places in Nicaragua:
Name
°F
24 Hours Forecast
San Diego
Local time: 04:25
December 22, monday
0600
77°F
SW
15 mph
15 mph
0900
82°F
SW
17 mph
17 mph
1200
88°F
W
16 mph
16 mph
1500
88°F
W
17 mph
17 mph
1800
82°F
W
16 mph
16 mph
2100
79°F
W
14 mph
14 mph
December 23, tuesday
0000
77°F
W
13 mph
13 mph
0300
77°F
SW
14 mph
14 mph
