FallPeak season ~73°F highs

Things to do in Lisbon in September

September is one of the best months to visit Lisbon, with average highs around 73°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

Franconia Notch State Park

state park in New Hampshire, United States

2Foliage walks

Black Mountain State Forest

State forest in Grafton County, New Hampshire

3Foliage walks

Forest Lake State Park

State park in Coös County, New Hampshire

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 New Hampshire

Manchester Meredith Lebanon Berlin Keene

Lisbon in September: quick answers

Is September a good time to visit Lisbon?

September is one of the best months to visit Lisbon, with average highs around 73°F. Crisp air and changing leaves make parks and viewpoints shine.

What is the weather like in Lisbon in September?

Average daytime highs are around 73°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 Lisbon in September?

Top picks for September: Franconia Notch State Park, Black Mountain State Forest, Forest Lake State Park, White Mountain Motorsports Park, Fay State Forest.