Current sea water temperature:
+73.9°F
| Minimum sea water temperature in September: | 75.2°F |
| Maximum sea water temperature in September: | 63.1°F |
| Average sea water temperature in September: | 69.2°F |
| more information | |
14 days
forecast
forecast
| San Diego |
monthly
weather
weather
| San Diego |
Sea water temperature for the last 10 days:
| September 14 | 73.9°F | September 9 | 72.0°F |
| September 13 | 73.8°F | September 8 | 72.7°F |
| September 12 | 73.4°F | September 7 | 73.0°F |
| September 11 | 72.7°F | September 6 | 73.6°F |
| September 10 | 72.1°F | September 5 | 73.4°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 August, September and July.
Monthly Sea Temperatures in San Diego, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 72.0°F. The highest and lowest sea temperatures during the month were 75.4°F and 67.8°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 67.3°F. The highest and lowest sea temperatures during the month were 70.5°F and 63.1°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 70.0°F. The highest and lowest sea temperatures during the month were 73.9°F and 65.5°F.
current
weather
weather
| San Diego |
weather in
September
September
| San Diego |
Best time for vacation in San Diego
San Diego on a weather map
Places in USA:
Name
°F
24 Hours Forecast
San Diego
Local time: 13:41
September 14, monday
1500
72°F
NE
10 mph
10 mph
1800
72°F
NE
8 mph
8 mph
2100
70°F
N
7 mph
7 mph
September 15, tuesday
0000
70°F
N
8 mph
8 mph
0300
70°F
N
7 mph
7 mph
0600
68°F
N
6 mph
6 mph
0900
70°F
N
7 mph
7 mph
1200
72°F
NE
8 mph
8 mph
