Current sea water temperature:
+57.7°F
| Minimum sea water temperature in June: | 67.5°F |
| Maximum sea water temperature in June: | 54.7°F |
| Average sea water temperature in June: | 61.3°F |
| more information | |
14 days
forecast
forecast
| Charlestown |
monthly
weather
weather
| Charlestown |
Sea water temperature for the last 10 days:
| June 8 | 57.7°F | June 3 | 54.7°F |
| June 7 | 58.3°F | June 1 | 54.9°F |
| June 6 | 57.4°F | May 31 | 55.0°F |
| June 5 | 57.9°F | May 30 | 56.5°F |
| June 4 | 55.9°F | May 29 | 56.3°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
June
June
| Charlestown |
Best time for vacation in Charlestown
Charlestown on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charlestown
Local time: 16:18
June 08, monday
1800
66°F
N
12 mph
12 mph
2100
61°F
NE
14 mph
14 mph
June 09, tuesday
0000
61°F
NE
12 mph
12 mph
0300
61°F
E
14 mph
14 mph
0600
61°F
E
15 mph
15 mph
0900
64°F
E
16 mph
16 mph
1200
66°F
NE
15 mph
15 mph
1500
66°F
NE
20 mph
20 mph
