World Resorts USA Westerly Weather

Westerly sea water temperature

Current sea water temperature:
+37.8°F
Minimum sea water temperature in March: 44.2°F
Maximum sea water temperature in March: 35.2°F
Average sea water temperature in March: 41.0°F

Sea water temperature for the last 10 days:

March 18 37.8°F March 13 38.5°F
March 17 36.9°F March 12 38.8°F
March 16 37.0°F March 11 37.4°F
March 15 36.9°F March 10 36.3°F
March 14 37.2°F March 9 36.3°F

When is the warmest sea in Westerly?

Based on the data about daily sea water temperature for the last three years the warmest sea in Westerly was noticed in August, July and September.

Monthly Sea Temperatures in Westerly, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 69.3°F. The highest and lowest sea temperatures during the month were 71.6°F and 67.8°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 68.3°F. The highest and lowest sea temperatures during the month were 71.2°F and 64.6°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 68.2°F. The highest and lowest sea temperatures during the month were 69.8°F and 66.7°F.

Best time for vacation in Westerly

Sunniest months:
November 17 days
December 14 days
October 14 days
Warmest months:
July 79.4 °F
August 77.9 °F
June 72.5 °F
Warmest sea temp:
August 70.0 °F
July 68.6 °F
September 68.3 °F
Coldest months:
January 36.2 °F
February 37.3 °F
December 41.1 °F
Rainiest months:
October 4 days
November 3 days
July 3 days
Windiest months:
March 10.9 mph
April 10.5 mph
January 10.5 mph

Westerly on a weather map

Westerly
+34°F
N 9 mph
Feels like: +27°F
Precip.: 0%
Places in USA:
Name
°F
+45°F
+75°F
+75°F
+99°F
+93°F
+66°F
+72°F
+72°F
+37°F
+70°F
+86°F
+72°F
+66°F
+77°F
+37°F
24 Hours Forecast
Westerly
Local time: 17:18
March 18, wednesday
1800
34°F
N
9 mph
2100
32°F
N
6 mph
March 19, thursday
0000
32°F
N
5 mph
0300
32°F
N
4 mph
0600
32°F
NW
2 mph
0900
34°F
NW
4 mph
1200
37°F
N
7 mph
1500
37°F
N
9 mph
Units of measurement: °C / °F