August · Alaska
Best time to visit Katmai National Park in August Weather, crowds & prices
Weather in Katmai National Park in August
Average temperature 10°C, 176 mm of rain, about 7 days with 6+ hours of sunshine and 89% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
5.4/10
Ranked #4 of 12 months
- Avg temp
- 10°C
- Rainfall
- 176 mm
- Humidity
- 89%
- Days with 6h+ sun
- 7
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Katmai National Park scores 5.4/10 for nature and wildlife travel - an above-average month (#4 of 12). Expect around 10°C, 176 mm of rain, and roughly 7 days with 6+ hours of sunshine this month.
Katmai protects a remote volcanic landscape, salmon rivers, and a major brown-bear population, with Brooks Camp its best-known visitor base.
August in Katmai National Park — workable with trade-offs
Expect 10°C (49°F) in August. A good month for city streets, viewpoints and long meals; leave swimming for another season.
176 mm of rain signals a properly wet month, with only about 7 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 5.4/10 on the same scale — 4th of 12 months, versus 7.5/10 for the best month here.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella, footwear you can get muddy.
Expect peak pricing, and this is one of the busiest months here.
If your dates are flexible, June is materially better in Katmai National Park — 2.1 points higher on the same scale.
Frequently asked
- What is the weather like in Katmai National Park in August?
- In August, Katmai National Park averages 10°C, 176 mm of rain, and about 7 days with 6+ hours of sunshine. Its climate-comfort score is 5.4/10.
- Is August a good time to visit Katmai National Park?
- August earns a 5.4/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Katmai National Park in August?
- Expect about 176 mm of rain in August. Average humidity is 89% and there are about 7 days with 6+ hours of sunshine.
Curated in Katmai National Park
Tickets & experiences
Things to do in Katmai National Park
Katmai National Park, Alaska. Live activities and tours from GetYourGuide, matched to this destination.