Average sea water temperature in September:
+86.6°F
| Minimum sea water temperature in September: | 88.7°F |
| Maximum sea water temperature in September: | 82.4°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 86.6°F. The highest and lowest sea temperatures during the month were 88.5°F and 85.5°F.
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| Key Largo |
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Monthly sea water temperature in Key Largo, °F
Which USA resorts have warmest sea in September?
| Place name | September 2025 | September 2024 |
|---|---|---|
| Key West | 86.9°F | 87.4°F |
| Fort Lauderdale | 86.4°F | 86.4°F |
| West Palm Beach | 86.2°F | 86.4°F |
| Miami Beach | 86.1°F | 86.3°F |
| Naples | 86.1°F | 87.2°F |
| South Padre Island | 86.0°F | 85.8°F |
| Miami | 85.8°F | 86.0°F |
| Houston | 84.9°F | 83.4°F |
| Siesta Key | 84.9°F | 86.8°F |
| Sarasota | 84.8°F | 86.7°F |
| Tampa | 84.3°F | 86.0°F |
| New Orleans | 84.3°F | 82.9°F |
| St. Petersburg | 84.1°F | 86.1°F |
| Clearwater Beach | 84.0°F | 86.2°F |
| Pensacola | 83.9°F | 84.2°F |
| Panama City Beach | 83.4°F | 84.8°F |
| Destin | 83.1°F | 84.5°F |
| Orlando | 82.8°F | 83.6°F |
| Daytona Beach | 82.7°F | 83.2°F |
| St. Augustine | 81.8°F | 82.7°F |
Best time for vacation in Key Largo
Key Largo on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Key Largo
Local time: 14:57
July 11, saturday
1500
88°F
W
15 mph
15 mph
1800
86°F
NW
11 mph
11 mph
2100
84°F
NW
6 mph
6 mph
July 12, sunday
0000
84°F
S
6 mph
6 mph
0300
82°F
SW
11 mph
11 mph
0600
84°F
W
10 mph
10 mph
0900
84°F
W
15 mph
15 mph
1200
84°F
W
13 mph
13 mph
