How Crowded Is Acadia National Park in May?

May runs about 0.9× Acadia National Park's average month, which makes it an average month here — roughly 7% of the park's yearly visitors come in May.

In a typical May the park sees about 266,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes May the 6th-busiest of the park's twelve months, sitting between the August peak (2.5×) and the February low (0×).

On our Best Time to Visit score May rates 63/100 ("Good") — the single best-rated month at Acadia, balancing crowds against weather and daylight.

Typical May weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 65°F and an overnight low around 45°F, with about 4.5" of precipitation.

That average of about 55°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 56% of annual visitors, choosing May instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 14.6 hours of daylight in May to explore — between the 8.7-hour midwinter low and the 15.3-hour summer high.

Park-wide, 2025 drew 4,079,318 recreation visits, up 3% from 3,961,661 in 2024.

Across the past decade overall visitation has risen about 21.3%, so a May visit is likely to feel busier than it did a few years ago.