May · United States
Best time to visit Bar Harbor in May Weather, crowds & prices
Weather in Bar Harbor in May
Average temperature 11°C, 76 mm of rain, about 25 days with 6+ hours of sunshine and 82% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
8.5/10
Ranked #1 of 12 months
- Avg temp
- 11°C
- Rainfall
- 76 mm
- Humidity
- 82%
- Days with 6h+ sun
- 25
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
May in Bar Harbor scores 8.5/10 for nature and wildlife travel - the single best month of the year. Expect around 11°C, 76 mm of rain, and roughly 25 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.
May in Bar Harbor tops the year's climate scores
May averages 11°C (52°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 76 mm, so plan one flexible day in three; you still get about 25 days with 6+ hours of sunshine and 14.6 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Bar Harbor at 8.5/10 — the reference point every other month on this page is measured against.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer, footwear you can get muddy.
Plan for peak pricing, with crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Bar Harbor in May?
- In May, Bar Harbor averages 11°C, 76 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 8.5/10.
- Is May a good time to visit Bar Harbor?
- May earns a 8.5/10 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 May?
- Expect about 76 mm of rain in May. Average humidity is 82% and there are about 25 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.