Current sea water temperature:
+73.2°F
| Minimum sea water temperature in August: | 75.4°F |
| Maximum sea water temperature in August: | 67.3°F |
| Average sea water temperature in August: | 70.7°F |
| more information | |
14 days
forecast
forecast
| Groton |
monthly
weather
weather
| Groton |
Sea water temperature for the last 10 days:
| August 13 | 73.2°F | August 8 | 75.2°F |
| August 12 | 73.6°F | August 7 | 72.3°F |
| August 11 | 73.9°F | August 6 | 70.3°F |
| August 10 | 75.4°F | August 5 | 70.2°F |
| August 9 | 73.6°F | August 4 | 70.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Groton?
Based on the data about daily sea water temperature for the last three years the warmest sea in Groton was noticed in August, July and September.
Monthly Sea Temperatures in Groton, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 70.3°F. The highest and lowest sea temperatures during the month were 74.1°F and 68.7°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 68.2°F. The highest and lowest sea temperatures during the month were 70.9°F and 65.5°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 68.8°F. The highest and lowest sea temperatures during the month were 70.9°F and 67.6°F.
current
weather
weather
| Groton |
weather in
August
August
| Groton |
Best time for vacation in Groton
Groton on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Groton
Local time: 10:51
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
