Measurements:
°C
°F
CURRENT WEATHER
16:37
Charlestown
60°F
SE 11 mph
Feels like: 60°F
Precip: 0%
World Resorts USA Charlestown Weather

7 Day Weather Forecast

04.23
thu
DAY
50°F
E 13 mph
precip
0%
NIGHT
46°F
S 7 mph
precip
0%
04.24
fri
DAY
50°F
SE 3 mph
precip
0%
NIGHT
44°F
NW 9 mph
precip
0%
04.25
sat
DAY
46°F
W 13 mph
precip
0%
NIGHT
42°F
W 11 mph
precip
100%
04.26
sun
DAY
48°F
W 9 mph
precip
0%
NIGHT
44°F
SW 6 mph
precip
0%
04.27
mon
DAY
50°F
W 8 mph
precip
0%
NIGHT
46°F
NW 5 mph
precip
0%
04.28
tue
DAY
50°F
NW 8 mph
precip
0%
NIGHT
48°F
NW 11 mph
precip
100%
04.29
wed
DAY
50°F
NW 17 mph
precip
100%
NIGHT
50°F
NE 3 mph
precip
79%

Charlestown Sea Water Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Charlestown was 5.6°F. The maximum and minimum values were 3.9°F and 7.4°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 35.0 °F
February 35.5 °F
December 41.0 °F
The most rainy months:
October 4 days
November 3 days
April 3 days
The most windy months:
January 13 mph
December 13 mph
March 12 mph
more details