Measurements:
°C
°F
CURRENT WEATHER
23:51
Charlestown
60°F
SE 12 mph
Feels like: 58°F
Precip: 19%
World Resorts USA Charlestown Weather

7 Day Weather Forecast

10.26
mon
DAY
60°F
E 15 mph
precip
4%
NIGHT
60°F
SE 12 mph
precip
19%
10.27
tue
DAY
54°F
SW 11 mph
precip
6%
NIGHT
52°F
NW 4 mph
precip
15%
10.28
wed
DAY
56°F
N 7 mph
precip
15%
NIGHT
56°F
NE 11 mph
precip
17%
10.29
thu
DAY
62°F
NE 12 mph
precip
8%
NIGHT
60°F
NE 17 mph
precip
13%
10.30
fri
DAY
64°F
E 9 mph
precip
15%
NIGHT
52°F
S 14 mph
precip
13%
10.31
sat
DAY
54°F
S 8 mph
precip
8%
NIGHT
52°F
NE 1 mph
precip
19%
11.01
sun
DAY
58°F
N 9 mph
precip
16%
NIGHT
60°F
NE 13 mph
precip
24%

Charlestown Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Charlestown was 16.8°F. The maximum and minimum values were 15.0°F and 18.2°F respectively.

Charlestown on the Weather Map

Best Time to Visit Charlestown
The most sunny months:
November 17 days
October 13 days
December 13 days
The most warm months:
July 78.9 °F
August 77.8 °F
September 71.8 °F
Warmest sea temperature:
August 73.1 °F
July 71.6 °F
September 70.5 °F
The most cold months:
January 35.0 °F
February 35.5 °F
December 41.0 °F
The most rainy months:
November 3 days
October 3 days
January 2 days
The most windy months:
January 13 mph
December 13 mph
March 12 mph
more details