FallPeak season ~72°F highs

Things to do in Portland in September

September is one of the best months to visit Portland, with average highs around 72°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.

Desert of Maine

desert

2Foliage walks

Maine Maritime Museum Park

non-profit organization in the USA

3Foliage walks

Pond Island National Wildlife Refuge

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

Bar Harbor Bangor Augusta York

Portland in September: quick answers

Is September a good time to visit Portland?

September is one of the best months to visit Portland, with average highs around 72°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Portland in September?

Average daytime highs are around 72°F, compared with 81°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 Portland in September?

Top picks for September: Desert of Maine, Maine Maritime Museum Park, Pond Island National Wildlife Refuge, Popham Beach State Park, Wolfe's Neck Woods State Park.