Haleakalā in October: Crowds, Weather & What to Pack
Peak crowds · VisitWhen score 59/100 · #8 of 12 months
October is peak season — expect the year's biggest crowds at Haleakalā National Park: crowds run 86% of the July peak (70,749 average visits). Weather: highs average 64°F and lows 48°F, with 3.3″ of precipitation and 11.7 hours of daylight. Computed from NPS and NOAA data.
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Crowds in October
Haleakalā averages 70,749 recreation visits in October — 86% of what July, the peak month, draws. Plan lodging and entries with that in mind — book early and start days at dawn.
Weather & daylight
Daytime temperatures are comfortable (highs average 64°F), and nights stay mild (lows average 48°F). Average precipitation is 3.3″ for the month. Mid-month daylight runs 11.7 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 October.
What to pack for Haleakalā in October
Computed from the month's weather normals above — not a generic list.
- Packable rain jacket — 3.3″ of precipitation is normal this month
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
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Looking for a better window? The computed best months for Haleakalā are April and August.
Also at their best in October
Other parks whose computed October verdict is a best window — same NPS × NOAA formula:
- Badlands in October — 27% of peak crowds, highs 63°F, score 81/100
- Isle Royale in October — 2% of peak crowds, highs 51°F, score 81/100
- Wind Cave in October — 25% of peak crowds, highs 61°F, score 81/100
- Gateway Arch in October — 26% of peak crowds, highs 69°F, score 80/100
Common questions
Is Haleakalā crowded in October?
Yes — October runs 86% of Haleakalā's peak, averaging 70,749 recreation visits (NPS, 2021–2025).
What is the weather like in Haleakalā in October?
Average highs of 64°F, lows of 48°F, 3.3″ of precipitation (NOAA 1991–2020 normals, HALEAKALA RS 338, HI US station).
What should I pack for Haleakalā in October?
Packable rain jacket; 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 October · Last verified 2026-09-24