Bar Harbor Weather in September

What's the weather like in Bar Harbor (Maine) in September 2024?

The climate in Bar Harbor during September can be summarized as mild and damp.

September is in the fall / autumn in Bar Harbor and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 20°C (69°F), whilst at night 9°C (49°F) is normal.

Bar Harbor weather averages (imperial / metric)
Daytime temperature 20.3°C 68.5°F
Nightly temperature 9.3°C 48.7°F
Average temperature 14.8°C 58.6°F
Daily sunshine 6.8 hrs
Avg rainfall 112 mm 4.4 ins
Rainy days 10 days
Sea temperature 13.3°C 55.9°F
Humidity 80%
Windspeed 13kph 8 mph

On average September is the 5th wettest month of the year in Bar Harbor with around 112mm 4.4 inches of rain making it a damp time to visit. This rainfall is typically spread over 10 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.8 hours of sunshine per day.

September temperatures in Bar Harbor

Bar Harbor average temperature in September

September rainfall

Bar Harbor average rain in September

September hourly sunshine

Bar 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 Bar Harbor in September 2024.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Bar Harbor weather stats

Bar Harbor weather statistics
Hottest month: July 25.7°C 78.3°F
Driest month: August 74mm 2.9ins
Sunniest month: August 7.9hrs
Coldest month: January -2.1°C 28.2°F
Wettest month: November 153mm 6ins
Map showing location of Bar Harbor (44.38758, -68.2039) Bar Harbor map pin © Google

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