Measurements:
°C
°F
CURRENT WEATHER
21:02
Charlestown
58°F
SE 17 mph
Feels like: 54°F
Precip: 2%
World Resorts USA Charlestown Weather

7 Day Weather Forecast

10.05
mon
DAY
66°F
E 17 mph
precip
7%
NIGHT
54°F
SE 19 mph
precip
3%
10.06
tue
DAY
56°F
SE 15 mph
precip
1%
NIGHT
50°F
SE 10 mph
precip
2%
10.07
wed
DAY
62°F
NE 11 mph
precip
2%
NIGHT
64°F
NE 21 mph
precip
8%
10.08
thu
DAY
68°F
NE 21 mph
precip
9%
NIGHT
62°F
S 9 mph
precip
7%
10.09
fri
DAY
64°F
SE 14 mph
precip
2%
NIGHT
60°F
E 11 mph
precip
5%
10.10
sat
DAY
62°F
SE 13 mph
precip
3%
NIGHT
56°F
SW 7 mph
precip
13%
10.11
sun
DAY
64°F
N 13 mph
precip
15%
NIGHT
62°F
NE 12 mph
precip
70%

Charlestown Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Charlestown was 18.0°F. The maximum and minimum values were 15.5°F and 20.2°F respectively.

Charlestown on the Weather Map

Best Time to Visit Charlestown
The most sunny months:
November 17 days
October 14 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:
October 4 days
November 3 days
January 2 days
The most windy months:
January 13 mph
December 13 mph
March 12 mph
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