Measurements:
°C
°F
CURRENT WEATHER
09:38
Westerly
60°F
SW 14 mph
Feels like: 60°F
Precip: 5%
World Resorts USA Westerly Weather

7 Day Weather Forecast

09.15
tue
DAY
64°F
W 9 mph
precip
3%
NIGHT
64°F
NW 7 mph
precip
10%
09.16
wed
DAY
68°F
NE 9 mph
precip
12%
NIGHT
68°F
NE 11 mph
precip
9%
09.17
thu
DAY
72°F
NE 12 mph
precip
8%
NIGHT
72°F
NE 14 mph
precip
21%
09.18
fri
DAY
74°F
W 11 mph
precip
6%
NIGHT
66°F
SW 9 mph
precip
22%
09.19
sat
DAY
66°F
W 11 mph
precip
3%
NIGHT
72°F
N 20 mph
precip
22%
09.20
sun
DAY
74°F
E 14 mph
precip
41%
NIGHT
66°F
SW 10 mph
precip
17%
09.21
mon
DAY
66°F
W 8 mph
precip
22%
NIGHT
62°F
W 15 mph
precip
37%

Westerly Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Westerly was 20.7°F. The maximum and minimum values were 20.3°F and 21.3°F respectively.

Westerly on the Weather Map

Best Time to Visit Westerly
The most sunny months:
November 17 days
December 14 days
October 14 days
The most warm months:
July 83.1 °F
August 81.3 °F
June 75.9 °F
Warmest sea temperature:
August 72.3 °F
July 70.5 °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
November 3 days
July 3 days
The most windy months:
March 11 mph
January 10 mph
April 10 mph
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