Haleakalā in June: Crowds, Weather & What to Pack
Peak crowds · VisitWhen score 61/100 · #5 of 12 months
June is peak season — expect the year's biggest crowds at Haleakalā National Park: crowds run 99% of the July peak (81,392 average visits). Weather: highs average 66°F and lows 48°F, with 1.6″ of precipitation and 13.4 hours of daylight. Computed from NPS and NOAA data.
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Crowds in June
Haleakalā averages 81,392 recreation visits in June — 99% of what July, the peak month, draws. Trailheads and parking fill accordingly — book early and start days at dawn.
Weather & daylight
Days are mild (highs average 66°F), and nights stay mild (lows average 48°F). It is typically dry (1.6″ of precipitation). Mid-month daylight runs 13.4 hours.
NOAA 1991–2020 monthly normals, station HALEAKALA RS 338, HI US (7 mi from park coordinates, 6,962 ft elevation) — conditions vary inside the park, especially with elevation. Daylight computed for the 15th of June.
What to pack for Haleakalā in June
Computed from the month's weather normals above — not a generic list.
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
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If your dates are flexible, consider shifting: The computed best months for Haleakalā are April and August.
Also at their best in June
Other parks whose computed June verdict is a best window — same NPS × NOAA formula:
- North Cascades in June — 26% of peak crowds, highs 74°F, score 91/100
- Katmai in June — 34% of peak crowds, highs 59°F, score 88/100
- Crater Lake in June — 44% of peak crowds, highs 57°F, score 84/100
- Olympic in June — 48% of peak crowds, highs 67°F, score 78/100
Common questions
Is Haleakalā crowded in June?
Yes — June runs 99% of Haleakalā's peak, averaging 81,392 recreation visits (NPS, 2021–2025).
What is the weather like in Haleakalā in June?
Average highs of 66°F, lows of 48°F, 1.6″ of precipitation (NOAA 1991–2020 normals, HALEAKALA RS 338, HI US station).
What should I pack for Haleakalā in June?
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 June · Last verified 2026-09-24