Current sea water temperature:
+64.0°F
| Minimum sea water temperature in June: | 67.5°F |
| Maximum sea water temperature in June: | 52.9°F |
| Average sea water temperature in June: | 61.1°F |
| more information | |
14 days
forecast
forecast
| Groton |
monthly
weather
weather
| Groton |
Sea water temperature for the last 10 days:
| June 26 | 64.0°F | June 21 | 62.1°F |
| June 25 | 62.8°F | June 20 | 62.8°F |
| June 24 | 63.0°F | June 19 | 61.0°F |
| June 23 | 63.3°F | June 18 | 62.4°F |
| June 22 | 62.2°F | June 17 | 61.5°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:
2025
2024
2023
The average sea water temperature in July of 2025 was 69.9°F. The highest and lowest sea temperatures during the month were 72.7°F and 65.7°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
July
July
| Groton |
Best time for vacation in Groton
Groton on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Groton
Local time: 18:17
June 26, friday
2100
70°F
N
6 mph
6 mph
June 27, saturday
0000
68°F
E
1 mph
1 mph
0300
68°F
S
2 mph
2 mph
0600
66°F
S
4 mph
4 mph
0900
70°F
S
5 mph
5 mph
1200
75°F
N
6 mph
6 mph
1500
70°F
NE
7 mph
7 mph
1800
70°F
NE
7 mph
7 mph
