Average sea water temperature in January:
+42.3°F
| Minimum sea water temperature in January: | 46.8°F |
| Maximum sea water temperature in January: | 36.1°F |
Daily sea water temperature in January, °F
Show year:
2026
2025
2024
The average sea water temperature in January of 2026 was 39.3°F. The highest and lowest sea temperatures during the month were 41.7°F and 36.1°F.
Monthly sea water temperature in Groton, °F
Which USA resorts have warmest sea in January?
| Place name | January 2026 | January 2025 |
|---|---|---|
| Honolulu | 77.2°F | 77.6°F |
| Hawaii | 77.2°F | 77.5°F |
| Maui | 77.0°F | 76.9°F |
| Kauai | 77.0°F | 75.0°F |
| West Palm Beach | 76.6°F | 75.5°F |
| Oahu | 76.1°F | 76.5°F |
| Fort Lauderdale | 75.9°F | 75.1°F |
| Miami Beach | 74.0°F | 73.1°F |
| Key West | 72.5°F | 70.3°F |
| Miami | 71.2°F | 70.7°F |
| Naples | 67.7°F | 64.7°F |
| Cocoa Beach | 66.9°F | 60.9°F |
| Siesta Key | 65.0°F | 61.5°F |
| Sarasota | 65.0°F | 61.2°F |
| Orlando | 64.8°F | 59.8°F |
| Tampa | 64.3°F | 60.4°F |
| Daytona Beach | 64.1°F | 59.7°F |
| Fort Walton Beach | 63.2°F | 61.8°F |
| Destin | 62.8°F | 61.4°F |
| Santa Rosa Beach | 62.4°F | 61.1°F |
Best time for vacation in Groton
Groton on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Groton
Local time: 11:41
August 13, thursday
1200
84°F
E
8 mph
8 mph
1500
88°F
E
11 mph
11 mph
1800
81°F
SE
10 mph
10 mph
2100
72°F
SE
9 mph
9 mph
August 14, friday
0000
68°F
SE
8 mph
8 mph
0300
64°F
S
7 mph
7 mph
0600
64°F
SE
7 mph
7 mph
0900
72°F
SE
9 mph
9 mph
