Measurements:
°C
°F
Jamestown
38°F
W 5 mph
Feels like: 36°F
Precip: 84%
World Resorts USA Jamestown Weather

Jamestown Sea Water Temperature

Current Sea Water Temperature:
+41.0°F
Maximum Sea Water Temperature in April: 55.2°F
Minimum Sea Water Temperature in April: 40.0°F
Average water temperature in April: 46.4°F

Sea Water Temperature for the Last 10 Days:

April 03 41.0°F March 29 39.8°F
April 02 41.2°F March 28 39.8°F
April 01 40.0°F March 27 40.6°F
March 31 40.6°F March 26 39.8°F
March 30 40.0°F March 25 37.8°F

When is the Warmest Sea for Jamestown?

According to our data for the last three years for Jamestown the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Jamestown was 73.0°F. The maximum and minimum values were 69.0°F and 76.8°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Jamestown was 73.3°F. The maximum and minimum values were 69.2°F and 76.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Jamestown was 70.7°F. The maximum and minimum values were 69.6°F and 72.2°F respectively.

Best Time to Visit Jamestown
The most sunny months:
November 17 days
September 14 days
October 14 days
The most warm months:
July 82.3 °F
August 81.0 °F
June 75.5 °F
Warmest sea temperature:
August 75.5 °F
July 74.8 °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
April 3 days
October 3 days
The most windy months:
January 10 mph
December 10 mph
March 9 mph

Jamestown on the Weather Map

USA Resorts:
NAME
Chicago +46
Hawaii +74
Honolulu +74
Houston +74
Las Vegas +54
Los Angeles +56
Maui +66
Miami +74
Miami Beach +78
New York +40
San Diego +58
San Francisco +50
Sarasota +72
Tampa +72
Washington +48
24 Hours Weather Forecast
Jamestown
Local time: 07:04
03 apr, friday
0900 40°F
N
6 mph
1200 44°F
NE
7 mph
1500 48°F
NE
14 mph
1800 46°F
NE
14 mph
2100 46°F
NE
14 mph
04 apr, saturday
0000 46°F
NE
14 mph
0300 46°F
NE
11 mph
0600 46°F
SE
6 mph