Average sea water temperature in September:
+68.3°F
| Minimum sea water temperature in September: | 72.7°F |
| Maximum sea water temperature in September: | 62.8°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 68.2°F. The highest and lowest sea temperatures during the month were 70.3°F and 64.0°F.
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Monthly sea water temperature in Block Island, °F
Which USA resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Key West | 87.9°F | 86.9°F |
| Key Largo | 87.3°F | 86.6°F |
| Naples | 87.2°F | 86.1°F |
| Siesta Key | 87.1°F | 84.9°F |
| Houston | 87.0°F | 84.9°F |
| Sarasota | 87.0°F | 84.8°F |
| Corpus Christi | 86.9°F | 85.8°F |
| Fort Lauderdale | 86.6°F | 86.4°F |
| West Palm Beach | 86.6°F | 86.2°F |
| Cape Coral | 86.6°F | 85.2°F |
| New Orleans | 86.5°F | 84.3°F |
| Tampa | 86.2°F | 84.3°F |
| Clearwater Beach | 86.2°F | 84.0°F |
| Orange Beach | 86.1°F | 84.0°F |
| Pensacola Beach | 86.1°F | 83.9°F |
| Panama City Beach | 85.9°F | 83.4°F |
| Fort Walton Beach | 85.9°F | 83.3°F |
| Pensacola | 85.9°F | 83.9°F |
| Miami Beach | 85.9°F | 86.1°F |
| Destin | 85.8°F | 83.1°F |
Best time for vacation in Block Island
Block Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Block Island
Local time: 14:34
September 28, monday
1500
63°F
S
16 mph
16 mph
1800
59°F
S
22 mph
22 mph
2100
57°F
S
20 mph
20 mph
September 29, tuesday
0000
55°F
SE
17 mph
17 mph
0300
55°F
SE
13 mph
13 mph
0600
57°F
SE
11 mph
11 mph
0900
57°F
SE
9 mph
9 mph
1200
63°F
E
9 mph
9 mph
