Measurements:
°C
°F
Charlestown
42°F
NE 19 mph
Feels like: 32°F
Precip: 0%
World Resorts USA Charlestown Weather

7 Day Weather Forecast

01.09
fri
DAY
42°F
N 12 mph
precip
0%
NIGHT
42°F
NE 19 mph
precip
0%
01.10
sat
DAY
38°F
W 7 mph
precip
0%
NIGHT
38°F
SW 20 mph
precip
100%
01.11
sun
DAY
40°F
E 8 mph
precip
100%
NIGHT
34°F
E 26 mph
precip
0%
01.12
mon
DAY
32°F
E 20 mph
precip
0%
NIGHT
36°F
NE 19 mph
precip
0%
01.13
tue
DAY
36°F
E 16 mph
precip
0%
NIGHT
42°F
NE 24 mph
precip
0%
01.14
wed
DAY
40°F
NE 21 mph
precip
100%
NIGHT
40°F
NE 13 mph
precip
21%
01.15
thu
DAY
26°F
NE 15 mph
precip
0%
NIGHT
22°F
S 18 mph
precip
0%

Charlestown Sea Water Temperature in January, °F

Select Year: 2025 2024 2023

The average sea surface temperature in January 2025 for Charlestown was 5.6°F. The maximum and minimum values were 4.1°F and 7.6°F respectively.

Charlestown on the Weather Map

Best Time to Visit Charlestown
The most sunny months:
November 17 days
September 14 days
October 14 days
The most warm months:
July 79.6 °F
August 78.4 °F
September 72.1 °F
Warmest sea temperature:
August 73.1 °F
July 71.7 °F
September 70.6 °F
The most cold months:
January 35.7 °F
February 36.2 °F
December 41.0 °F
The most rainy months:
October 4 days
November 3 days
January 3 days
The most windy months:
December 13 mph
March 12 mph
January 12 mph