How Crowded Is Haleakalā in October?
October is an average month at Haleakalā National Park, running about 0.9× the park's average month — roughly 8% of the year's visitors come in October. That puts it between the July peak and the November low. Overall our best-time score rates October as "Good" for a visit. Typical October weather averages a high near 64°F and a low around 48°F, with about 3.3" of precipitation. You'll get about 11.5 hours of daylight to explore.
Frequently Asked Questions
October is average at Haleakalā National Park (about 0.9× the average month). Our best-time score rates it "Good". The single best month overall is September.
The busiest month is July and the quietest is November. October sits at about 0.9× the park's average, or 8% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.