Bayonne Weather in September

What's the weather like in Bayonne (New Jersey) in September 2025?

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

September is in the fall / autumn in Bayonne and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (76°F), whilst at night 15°C (59°F) is normal.

Bayonne weather averages (imperial / metric)
Daytime temperature 24.5°C 76.1°F
Nightly temperature 14.9°C 58.8°F
Average temperature 19.7°C 67.5°F
Daily sunshine 7.8 hrs
Avg rainfall 96 mm 3.8 ins
Rainy days 8 days
Sea temperature 21°C 69.8°F
Humidity 69%
Windspeed 16.6kph 10 mph

On average September is the 6th driest month of the year in Bayonne with around 96mm 3.8 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 7.8 hours of sunshine per day.

September temperatures in Bayonne

Bayonne average temperature in September

September rainfall

Bayonne average rain in September

September hourly sunshine

Bayonne 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 Bayonne 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

Bayonne weather stats

Bayonne weather statistics
Hottest month: July 29.4°C 84.9°F
Driest month: February 79mm 3.1ins
Sunniest month: August 9.2hrs
Coldest month: January 2.5°C 36.5°F
Wettest month: July 111mm 4.4ins
Map showing location of Bayonne (40.66871, -74.11431) Bayonne map pin © Google

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