August · United States
Best time to visit Bar Harbor in August Weather, crowds & prices
Weather in Bar Harbor in August
Average temperature 19°C, 102 mm of rain, about 21 days with 6+ hours of sunshine and 84% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
8.2/10
Ranked #4 of 12 months
- Avg temp
- 19°C
- Rainfall
- 102 mm
- Humidity
- 84%
- Days with 6h+ sun
- 21
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Bar Harbor scores 8.2/10 for nature and wildlife travel - an above-average month (#4 of 12). Expect around 19°C, 102 mm of rain, and roughly 21 days with 6+ hours of sunshine this month.
Bar Harbor is a nature and wildlife destination in United States. Its setting includes Coastal Maine village serving as the primary gateway to Acadia National Park and lobster dining.
August in Bar Harbor: strong conditions, 4th of 12
August averages 19°C (65°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Monthly rainfall reaches 102 mm — wet for this destination — but about 21 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 8.2/10 here, 4th of 12 months, against 8.5/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
Figure on peak pricing, with this is one of the busiest months here.
Frequently asked
- What is the weather like in Bar Harbor in August?
- In August, Bar Harbor averages 19°C, 102 mm of rain, and about 21 days with 6+ hours of sunshine. Its climate-comfort score is 8.2/10.
- Is August a good time to visit Bar Harbor?
- August earns a 8.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Bar Harbor in August?
- Expect about 102 mm of rain in August. Average humidity is 84% and there are about 21 days with 6+ hours of sunshine.
Curated in Bar Harbor
Tickets & experiences
Things to do in Bar Harbor
Bar Harbor, United States. Live activities and tours from GetYourGuide, matched to this destination.