Average sea water temperature in September:
+69.3°F
| Minimum sea water temperature in September: | 75.2°F |
| Maximum sea water temperature in September: | 63.1°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 73.7°F. The highest and lowest sea temperatures during the month were 75.0°F and 72.0°F.
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Monthly sea water temperature in San Diego, °F
Which USA resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Key West | 87.8°F | 86.9°F |
| Key Largo | 87.2°F | 86.6°F |
| Naples | 87.0°F | 86.1°F |
| Galveston | 87.0°F | 85.5°F |
| Siesta Key | 86.9°F | 84.9°F |
| Houston | 86.9°F | 84.9°F |
| Corpus Christi | 86.8°F | 85.8°F |
| Sarasota | 86.8°F | 84.8°F |
| West Palm Beach | 86.6°F | 86.2°F |
| Fort Lauderdale | 86.6°F | 86.4°F |
| New Orleans | 86.4°F | 84.3°F |
| Cape Coral | 86.3°F | 85.2°F |
| Orange Beach | 86.0°F | 84.0°F |
| Pensacola Beach | 85.9°F | 83.9°F |
| Tampa | 85.9°F | 84.3°F |
| Clearwater Beach | 85.9°F | 84.0°F |
| Miami Beach | 85.8°F | 86.1°F |
| Panama City Beach | 85.8°F | 83.4°F |
| Fort Walton Beach | 85.7°F | 83.3°F |
| Pensacola | 85.7°F | 83.9°F |
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: 21:52
October 25, sunday
0000
70°F
S
6 mph
6 mph
0300
70°F
S
4 mph
4 mph
0600
68°F
S
4 mph
4 mph
0900
70°F
S
3 mph
3 mph
1200
73°F
SE
8 mph
8 mph
1500
73°F
SE
12 mph
12 mph
1800
72°F
SE
11 mph
11 mph
2100
72°F
SE
9 mph
9 mph
