Weather · Bar Harbor, United States
Bar Harbor Weather in September
Expect mild, wet in Bar Harbor through September: highs near 20°C, lows around 14°C, 170mm of rain across the month. It's a reasonable time to visit.
Avg high
20°C
68°F
Avg low
14°C
57°F
Rainfall
170mm
#1 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Pack a rain jacket or travel umbrella, showers are frequent this month.
Timing a trip around the weather? A Local Friend in Bar Harbor builds it around the season for you.