24.12
wed
wed
Day
41°F
SE 25 mph
Precip.
0%
0%
Night
30°F
S 4 mph
Precip.
0%
0%
25.12
thu
thu
Day
36°F
NE 22 mph
Precip.
0%
0%
Night
32°F
S 20 mph
Precip.
0%
0%
26.12
fri
fri
Day
27°F
S 9 mph
Precip.
0%
0%
Night
28°F
SW 14 mph
Precip.
100%
100%
27.12
sat
sat
Day
32°F
SW 16 mph
Precip.
62%
62%
Night
28°F
S 5 mph
Precip.
0%
0%
28.12
sun
sun
Day
37°F
N 17 mph
Precip.
100%
100%
Night
39°F
E 17 mph
Precip.
84%
84%
29.12
mon
mon
Day
27°F
E 25 mph
Precip.
0%
0%
Night
25°F
E 24 mph
Precip.
0%
0%
30.12
tue
tue
Day
28°F
E 21 mph
Precip.
0%
0%
Night
25°F
SE 19 mph
Precip.
0%
0%
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 47.5°F. The highest and lowest sea temperatures during the month were 51.1°F and 44.2°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: 08:37
December 24, wednesday
0900
41°F
SE
26 mph
26 mph
1200
41°F
SE
25 mph
25 mph
1500
39°F
SE
22 mph
22 mph
1800
37°F
S
14 mph
14 mph
2100
32°F
S
9 mph
9 mph
December 25, thursday
0000
30°F
S
4 mph
4 mph
0300
30°F
E
7 mph
7 mph
0600
30°F
NE
11 mph
11 mph
