May is an excellent month at Acadia — it ranks 2nd of the twelve here. Expect about 59% fewer visitors than August, the park's peak — 327,335 visits on average. Days run around 65°F by afternoon and 45°F at night, with 14.8 hours of daylight.
May against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| May (this page) | Excellent | 327,335 | −59% | 65°F | 45°F | — | 14.8 h |
| April (best) | Excellent | 101,703 | −87% | 53°F | 35°F | — | 13.4 h |
| August (peak crowds) | Good | 798,914 | peak | 78°F | 60°F | — | 14 h |
Weather figures are for the Bar Harbor area — the Acadia NP station. Visits are 2021–2025 averages; climate normals cover 1991–2020. Conditions vary across the park; check current status before you go.
Common questions
Is May a good time to visit Acadia?
Yes — it is one of the best months of the year here. May ranks 2 of 12 at Acadia on crowds, weather, daylight, and access together.
How crowded is Acadia in May?
About 327,335 recreation visits on average — 59% below August, the park's peak.
How warm is Acadia in May?
Average highs around 65°F and lows around 45°F at the Acadia NP station.