North Plymouth Weather in September

What's the weather like in North Plymouth (Massachusetts) in September 2025?

The climate in North Plymouth during September can be summarized as mild and damp.

September is in the fall / autumn in North Plymouth and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 12°C (54°F) is normal.

North Plymouth weather averages (imperial / metric)
Daytime temperature 22.4°C 72.3°F
Nightly temperature 12°C 53.6°F
Average temperature 17.2°C 63°F
Daily sunshine 8.2 hrs
Avg rainfall 100 mm 3.9 ins
Rainy days 8 days
Sea temperature 18.4°C 65.2°F
Humidity 74%
Windspeed 15.1kph 9 mph

On average September is the 5th driest month of the year in North Plymouth with around 100mm 3.9 inches of rain making it a 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 8.2 hours of sunshine per day.

September temperatures in North Plymouth

North Plymouth average temperature in September

September rainfall

North Plymouth average rain in September

September hourly sunshine

North Plymouth 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 North Plymouth 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

North Plymouth weather stats

North Plymouth weather statistics
Hottest month: July 27.2°C 81°F
Driest month: July 83mm 3.3ins
Sunniest month: September 8.2hrs
Coldest month: January 2.3°C 36.1°F
Wettest month: November 123mm 4.8ins
Map showing location of North Plymouth (41.97094, -70.68281) North Plymouth map pin © Google

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