Measurements:
°C
°F
Westerly
98°F
SE 14 mph
Feels like: 112°F
Precip: 3%
World Resorts USA Westerly Weather

Westerly Sea Water Temperature

Current Sea Water Temperature:
+71.6°F
Maximum Sea Water Temperature in July: 76.2°F
Minimum Sea Water Temperature in July: 63.2°F
Average water temperature in July: 70.5°F

Sea Water Temperature for the Last 10 Days:

July 15 71.6°F July 10 69.4°F
July 14 70.4°F July 09 67.4°F
July 13 70.4°F July 08 68.2°F
July 12 70.0°F July 07 67.8°F
July 11 69.2°F July 06 68.0°F

When is the Warmest Sea for Westerly?

According to our data for the last three years for Westerly 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 Westerly was 71.5°F. The maximum and minimum values were 69.8°F and 74.0°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Westerly was 68.9°F. The maximum and minimum values were 66.2°F and 71.6°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Westerly was 70.2°F. The maximum and minimum values were 68.6°F and 72.0°F respectively.

Best Time to Visit Westerly
The most sunny months:
November 17 days
December 14 days
October 14 days
The most warm months:
July 82.6 °F
August 81.0 °F
June 75.9 °F
Warmest sea temperature:
August 72.2 °F
July 70.7 °F
September 70.4 °F
The most cold months:
January 34.7 °F
February 35.9 °F
December 40.1 °F
The most rainy months:
October 4 days
July 3 days
November 3 days
The most windy months:
March 11 mph
January 10 mph
April 10 mph

Westerly on the Weather Map

USA Resorts:
NAME
Boston +92
Chicago +86
Hawaii +80
Houston +80
Las Vegas +120
Los Angeles +106
Maui +76
Miami +96
Myrtle Beach +96
New York +110
San Diego +96
San Francisco +76
Santa Monica +84
Sarasota +102
Tampa +100
24 Hours Weather Forecast
Westerly
Local time: 15:09
15 jul, wednesday
1800 92°F
SE
14 mph
2100 82°F
SE
10 mph
16 jul, thursday
0000 76°F
S
6 mph
0300 74°F
SE
2 mph
0600 70°F
E
6 mph
0900 78°F
E
7 mph
1200 86°F
E
12 mph
1500 88°F
E
15 mph