FallPeak season ~70°F highs

Things to do in Bar Harbor in September

September is one of the best months to visit Bar Harbor, with average highs around 70°F. Crisp air and changing leaves make parks and viewpoints shine.

Plan a September weekend Where else in September

Best picks for September

What's famous here, weighted toward what shines in September.

1Foliage walks

Acadia National Park

national park in the US state of Maine

2Foliage walks

Cobscook Bay State Park

State park in Washington County, Maine

3Foliage walks

Agamont Park

Holidays in September 2027

Labour Day · Mon, Sep 6

Expect busier roads and pricier stays around these dates. See long weekends.

Also great in September in Maine

Portland Bangor Augusta York

Bar Harbor in September: quick answers

Is September a good time to visit Bar Harbor?

September is one of the best months to visit Bar Harbor, with average highs around 70°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Bar Harbor in September?

Average daytime highs are around 70°F, compared with 77°F in the warmest month. Check the forecast a week out; our planner favors indoor stops on rainy days.

What are the best things to do in Bar Harbor in September?

Top picks for September: Acadia National Park, Cobscook Bay State Park, Agamont Park, Asticou Azalea Garden, Cross Island National Wildlife Refuge.