York Harbor Weather in September

What's the weather like in York Harbor (Maine) in September 2025?

The climate in York Harbor during September can be summarized as mild and a little damp.

September is in the fall / autumn in York Harbor and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 10°C (49°F) is normal.

York Harbor weather averages (imperial / metric)
Daytime temperature 22.2°C 71.9°F
Nightly temperature 9.6°C 49.2°F
Average temperature 15.9°C 60.6°F
Daily sunshine 8.1 hrs
Avg rainfall 86 mm 3.4 ins
Rainy days 9 days
Sea temperature 15.5°C 59.8°F
Humidity 75%
Windspeed 13.2kph 8 mph

On average September is the 4th driest month of the year in York Harbor with around 86mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 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 York Harbor

York Harbor average temperature in September

September rainfall

York Harbor average rain in September

September hourly sunshine

York Harbor 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 York Harbor 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

York Harbor weather stats

York Harbor weather statistics
Hottest month: July 27.1°C 80.8°F
Driest month: August 73mm 2.9ins
Sunniest month: July 9.9hrs
Coldest month: January 0.3°C 32.5°F
Wettest month: November 126mm 5ins
Map showing location of York Harbor (43.13676, -70.64561) York Harbor map pin © Google

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