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Explore Acadia National Park on Maine’s Mount Desert Island with scenic drives, hiking, and views from Cadillac Mountain, the tallest peak on the coast.
Acadia National Park (ME) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Acadia National Park.
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Climate overview of Acadia National Park
The climate in Acadia National Park, Maine, United States of America, is marked by large temperature swings across the seasons, ranging from 25°C (77°F) in July to 0°C (32°F) in January.
The city receives considerable rain/snowfall, with around 1374 mm (54 in) annually. October is the wettest month. It has warm summers and very cold winters.
Acadia National Park Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Acadia National Park - and find the best time to visit.
Monthly Temperature in Acadia National Park
In Acadia National Park, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a comfortable 25°C (77°F) in July to a very cold 0°C (32°F) in the coolest month, January.
Nights vary from 16°C (61°F) in July to around -9°C (16°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Acadia National Park
Acadia National Park experiences significant rain/snowfall throughout the year, averaging 1374 mm (54 in) of precipitation annually. Acadia National Park offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month October (158 mm (6.2 in)) and the driest month August (90 mm (3.5 in)) is not too significant. For more details, please visit our Acadia National Park Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Acadia National Park
For comfortable weather, consider visiting Acadia National Park in July, August and September. Conditions are usually least favourable in January, February, March, April, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
wet
Apr
wet
May
mixed
Jun
very good
Jul
excellent
Aug
excellent
Sep
excellent
Oct
mixed
Nov
wet
Dec
cold
- Best overall: July, August and September
- Warmest weather: July and August
- Fewer rainy days: January, February, August, September and November
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Acadia National Park
What is the best time to visit Acadia National Park?
July, August and September typically offer the most optimal weather in Acadia National Park. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Acadia National Park has warm summers and very cold winters.
What temperatures can I expect in Acadia National Park?
Daytime highs range from 0°C (32°F) in January to 25°C (77°F) in July. Nighttime lows range from -9°C (16°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Acadia National Park get?
Annual rainfall is around 1374 mm (54 in). October is the wettest month with 158 mm (6.2 in), while August is the driest with 90 mm (3.5 in).
Acadia National Park 3-Day Forecast
Acadia National Park on the map
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