Current sea water temperature:
+35.2°F
| Minimum sea water temperature in February: | 43.9°F |
| Maximum sea water temperature in February: | 34.9°F |
| Average sea water temperature in February: | 40.0°F |
| more information | |
14 days
forecast
forecast
| Charlestown |
monthly
weather
weather
| Charlestown |
Sea water temperature for the last 10 days:
| February 26 | 35.2°F | February 21 | 35.6°F |
| February 25 | 35.2°F | February 20 | 35.6°F |
| February 24 | 36.0°F | February 19 | 35.6°F |
| February 23 | 35.8°F | February 18 | 35.1°F |
| February 22 | 35.8°F | February 17 | 35.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Charlestown?
Based on the data about daily sea water temperature for the last three years the warmest sea in Charlestown was noticed in August, July and September.
Monthly Sea Temperatures in Charlestown, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 69.6°F. The highest and lowest sea temperatures during the month were 72.0°F and 67.8°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 69.1°F. The highest and lowest sea temperatures during the month were 71.8°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 68.1°F. The highest and lowest sea temperatures during the month were 69.6°F and 66.7°F.
current
weather
weather
| Charlestown |
weather in
March
March
| Charlestown |
Best time for vacation in Charlestown
Charlestown on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charlestown
Local time: 14:46
February 26, thursday
1500
41°F
E
5 mph
5 mph
1800
36°F
SE
2 mph
2 mph
2100
36°F
S
6 mph
6 mph
February 27, friday
0000
34°F
S
9 mph
9 mph
0300
32°F
S
6 mph
6 mph
0600
30°F
S
6 mph
6 mph
0900
32°F
SE
2 mph
2 mph
1200
36°F
NE
5 mph
5 mph
