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Katmai · September
September is a good time to visit Katmai — quieter than August, busier than October.
Expect moderate crowds (5/10) and about 12.8 hours of daylight.
Crowd score
A comfortable middle ground: some company on popular trails, but no gridlock.
About 42% of this park's busiest month.
Source: NPS Visitor Use Statistics, 2023–2025
Data: NPS visitation 2023–2025 · crowd scores computed Jul 2026. How this is calculated →
Computed from federal data · Methodology by Sharon Ben-Moshe
Visitation
September draws about 17% of Katmai’s yearly visitors.
Typical monthly recreation visits, averaged over the most recent three full years.
Source: NPS Visitor Use Statistics, 2023–2025
Weather
Source: NOAA 1991–2020 climate normals, Mcneil River SGS, AK US
What's open
Katmai is open 24 hours per day, seven days per week.
No seasonal road or area closures reported for this park.
Source: NPS Data API
Conditions
No current alerts or closures reported for this park.
Source: NPS Data API
Context
Alternatives
FAQ
September rates 5/10 for crowds (Moderate) at Katmai National Park & Preserve — about 42% of its busiest month. Typical recreation visits: 5,800.
In September, Katmai averages a high of 0°F and a low of 0°F, with about 6.1 inches of precipitation.
Entry to Katmai is free.
Katmai is quietest in January and February. If your dates are flexible, those months bring the thinnest crowds of the year.
In mid-September, Katmai gets about 12.8 hours of daylight, with sunrise around 5:50 AM and sunset around 6:38 PM.