Acadia in May: Crowds, Weather & What to Pack
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May is one of the best months of the year to visit Acadia National Park: crowds run 41% of the August peak (327,335 average visits), days average 65°F with 14.8 hours of daylight. Computed from NPS and NOAA data.
Crowds in May
Acadia averages 327,335 recreation visits in May — 41% of what August, the peak month, draws. Trailheads and parking fill accordingly.
Weather & daylight
Days are mild (highs average 65°F), and mornings are chilly (lows average 45°F). This is one of the wetter months (4.5″ of precipitation on average). Mid-month daylight runs 14.8 hours.
NOAA 1991–2020 monthly normals, station ACADIA NP, ME US (2 mi from park coordinates, 470 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of May.
What to pack for Acadia in May
Computed from the month's weather normals above — not a generic list.
- Warm mid-layer (fleece or light puffy) — mornings average 45°F
- Rain shell + pack cover — 4.5″ of precipitation is normal this month
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
Common questions
Is Acadia crowded in May?
Moderately: May runs 41% of the August peak, averaging 327,335 visits (NPS, 2021–2025).
What is the weather like in Acadia in May?
Average highs of 65°F, lows of 45°F, 4.5″ of precipitation (NOAA 1991–2020 normals, ACADIA NP, ME US station).
What should I pack for Acadia in May?
Warm mid-layer (fleece or light puffy); Rain shell + pack cover; Sturdy broken-in footwear, navigation and a basic first-aid kit — the full weather-computed list is on this page.
See also: the best national parks to visit in May · Last verified 2026-07-16