Katmai · September
Katmai in September
September is a good time to visit Katmai — quieter than August, busier than October.
Expect moderate crowds (5/10), highs near 54°F, and about 12.8 hours of daylight.
Crowd score
How busy it gets
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 Oct 2026. How this is calculated →
Computed from federal data · Methodology by Sharon Ben-Moshe
Visitation
Typical September visits vs. the year
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
September weather
- Avg high
- 54°F
- Avg low
- 39°F
- Precipitation
- 5.1"
- Sunrise
- 5:50 AM
- Sunset
- 6:38 PM
- Daylight
- 12.8h
Source: NOAA 1991–2020 climate normals, KING SALMON 42 SE, AK US
What's open
Katmai in September: access
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
Current alerts
No current alerts or closures reported for this park.
Source: NPS Data API
Context
Katmai crowds across the year
Alternatives
Quieter nearby in September
FAQ
Katmai in September
How busy is Katmai in September?
September rates 5/10 for crowds (Moderate) at Katmai National Park & Preserve — about 42% of its busiest month. Typical recreation visits: 5,800.
What is the weather like at Katmai in September?
In September, Katmai averages a high of 54°F and a low of 39°F, with about 5.1 inches of precipitation.
How much does it cost to visit Katmai?
Entry to Katmai is free.
When is Katmai least crowded?
Katmai is quietest in January and February. If your dates are flexible, those months bring the thinnest crowds of the year.
How many hours of daylight does Katmai get in September?
In mid-September, Katmai gets about 12.8 hours of daylight, with sunrise around 5:50 AM and sunset around 6:38 PM.