Measurements:
°C
°F
CURRENT WEATHER
11:11
Jamestown
68°F
SW 5 mph
Feels like: 68°F
Precip: 2%
World Resorts USA Jamestown Weather

7 Day Weather Forecast

09.15
tue
DAY
68°F
SW 5 mph
precip
2%
NIGHT
60°F
N 6 mph
precip
8%
09.16
wed
DAY
70°F
NE 11 mph
precip
11%
NIGHT
66°F
E 6 mph
precip
14%
09.17
thu
DAY
74°F
N 11 mph
precip
10%
NIGHT
70°F
NE 11 mph
precip
24%
09.18
fri
DAY
74°F
SE 8 mph
precip
17%
NIGHT
58°F
SW 11 mph
precip
14%
09.19
sat
DAY
66°F
W 6 mph
precip
10%
NIGHT
62°F
N 11 mph
precip
16%
09.20
sun
DAY
66°F
N 16 mph
precip
86%
NIGHT
58°F
S 14 mph
precip
31%
09.21
mon
DAY
68°F
SW 11 mph
precip
7%
NIGHT
58°F
W 7 mph
precip
22%

Jamestown Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Jamestown was 21.1°F. The maximum and minimum values were 20.1°F and 21.6°F respectively.

Jamestown on the Weather Map

Best Time to Visit Jamestown
The most sunny months:
November 17 days
October 14 days
September 14 days
The most warm months:
July 82.8 °F
August 81.4 °F
June 76.5 °F
Warmest sea temperature:
August 75.4 °F
July 74.7 °F
September 71.9 °F
The most cold months:
January 34.7 °F
February 35.7 °F
December 39.9 °F
The most rainy months:
March 3 days
October 3 days
November 2 days
The most windy months:
January 10 mph
December 10 mph
March 9 mph
more details