The temperatures in Bar Harbor in August are comfortable with low of 15°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in Bar Harbor during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Bar Harbor in August 2025.
If you’re planning to visit Bar Harbor in the near future, we highly recommend that you review the 14 day weather forecast for Bar Harbor before you arrive.
Temperatures
24° / 15°
Rainy Days
4
Snowy Days
0
Dry Days
27
Rainfall
93
mm
Sun Hours
10.3
Hrs
