Average sea water temperature in September:
+82.4°F
| Minimum sea water temperature in September: | 85.6°F |
| Maximum sea water temperature in September: | 78.1°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 81.1°F. The highest and lowest sea temperatures during the month were 84.7°F and 78.1°F.
sea water
temperature
temperature
| Jacksonville |
monthly
weather
weather
| Jacksonville |
current
weather
weather
| Jacksonville |
14 days
forecast
forecast
| Jacksonville |
Monthly sea water temperature in Jacksonville, °F
Which USA resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Key West | 86.9°F | 87.4°F |
| Islamorada | 86.7°F | 87.3°F |
| Key Largo | 86.6°F | 87.1°F |
| Fort Lauderdale | 86.4°F | 86.4°F |
| West Palm Beach | 86.2°F | 86.4°F |
| Everglades | 86.2°F | 87.0°F |
| Miami Beach | 86.1°F | 86.3°F |
| Naples | 86.1°F | 87.2°F |
| Marco Island | 86.0°F | 87.2°F |
| South Padre Island | 86.0°F | 85.8°F |
| Corpus Christi | 85.8°F | 84.7°F |
| Miami | 85.8°F | 86.0°F |
| Sanibel Island | 85.7°F | 87.0°F |
| Galveston Island | 85.5°F | 84.4°F |
| Galveston | 85.5°F | 83.7°F |
| Houston | 84.9°F | 83.4°F |
| Siesta Key | 84.9°F | 86.8°F |
| Sarasota | 84.8°F | 86.7°F |
| Cocoa Beach | 84.6°F | 85.2°F |
| Tampa | 84.3°F | 86.0°F |
Best time for vacation in Jacksonville
Jacksonville on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Jacksonville
Local time: 22:42
January 13, tuesday
0000
48°F
S
8 mph
8 mph
0300
45°F
S
6 mph
6 mph
0600
45°F
S
6 mph
6 mph
0900
48°F
S
6 mph
6 mph
1200
55°F
SW
5 mph
5 mph
1500
59°F
SW
4 mph
4 mph
1800
59°F
SW
3 mph
3 mph
2100
57°F
NW
3 mph
3 mph
