Places › Bar Harbor, ME › September

Bar Harbor in September

One of the best months — score 90 of 100

Typical September days in Bar Harbor reach about 71°F with nights near 53°F.

What to pack for Bar Harbor in September

• A light jacket or fleece for evenings.
• Layers — afternoons run about 18° warmer than mornings.
• A waterproof shell — rain falls on about 11 days in a typical September.

Every packing line is triggered by a number on this page — the rules are on How we pick.

September vs. the alternatives

The whole year in Bar Harbor

Averages are the 1991–2020 climate normals (NOAA National Centers for Environmental Information) for the station named on each page. Rain days = days with at least 0.01 in of precipitation. Daylight is computed for the middle of the month.