30.12
tue
tue
Day
28°F
E 31 mph
Precip.
0%
0%
Night
30°F
E 28 mph
Precip.
0%
0%
31.12
wed
wed
Day
32°F
E 21 mph
Precip.
0%
0%
Night
34°F
NE 26 mph
Precip.
0%
0%
01.01
thu
thu
Day
30°F
SE 17 mph
Precip.
0%
0%
Night
27°F
E 16 mph
Precip.
0%
0%
02.01
fri
fri
Day
28°F
E 18 mph
Precip.
0%
0%
Night
32°F
E 12 mph
Precip.
0%
0%
03.01
sat
sat
Day
28°F
E 7 mph
Precip.
0%
0%
Night
28°F
SE 5 mph
Precip.
0%
0%
04.01
sun
sun
Day
30°F
NE 13 mph
Precip.
0%
0%
Night
25°F
SW 11 mph
Precip.
0%
0%
05.01
mon
mon
Day
30°F
W 5 mph
Precip.
0%
0%
Night
41°F
N 17 mph
Precip.
23%
23%
sea water
temperature
temperature
| Charlestown |
monthly
weather
weather
| Charlestown |
current
weather
weather
| Charlestown |
14 days
forecast
forecast
| Charlestown |
Sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 46.6°F. The highest and lowest sea temperatures during the month were 51.1°F and 42.8°F.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 42.0°F. The highest and lowest sea temperatures during the month were 45.7°F and 39.4°F.
Air temperature in Charlestown, °F
Precipitation total in Charlestown, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Charlestown
Charlestown on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charlestown
Local time: 18:22
December 30, tuesday
2100
30°F
E
29 mph
29 mph
December 31, wednesday
0000
30°F
E
28 mph
28 mph
0300
30°F
E
25 mph
25 mph
0600
30°F
E
22 mph
22 mph
0900
30°F
E
21 mph
21 mph
1200
32°F
E
21 mph
21 mph
1500
36°F
E
22 mph
22 mph
1800
36°F
E
21 mph
21 mph
