Westhampton Beach Weather in September

What's the weather like in Westhampton Beach (New York) in September 2025?

The climate in Westhampton Beach during September can be summarized as warm and a little damp.

September is in the fall / autumn in Westhampton Beach and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (74°F), whilst at night 13°C (56°F) is normal.

Westhampton Beach weather averages (imperial / metric)
Daytime temperature 23.3°C 74°F
Nightly temperature 13.1°C 55.6°F
Average temperature 18.2°C 64.8°F
Daily sunshine 8.1 hrs
Avg rainfall 89 mm 3.5 ins
Rainy days 8 days
Sea temperature 20.4°C 68.8°F
Humidity 75%
Windspeed 16kph 10 mph

On average September is the 5th driest month of the year in Westhampton Beach with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.1 hours of sunshine per day.

September temperatures in Westhampton Beach

Westhampton Beach average temperature in September

September rainfall

Westhampton Beach average rain in September

September hourly sunshine

Westhampton Beach average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Westhampton Beach in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Westhampton Beach weather stats

Westhampton Beach weather statistics
Hottest month: July 26.9°C 80.4°F
Driest month: June 69mm 2.7ins
Sunniest month: March 8hrs
Coldest month: January 2.9°C 37.2°F
Wettest month: December 114mm 4.5ins
Map showing location of Westhampton Beach (40.80316, -72.61454) Westhampton Beach map pin © Google

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