Denali National Park weather in September 2026

Q: How warm is it in Denali National Park in September?

Daytime temperatures usually reach 13°C in Denali National Park in September, falling to 5°C at night.

Q: How sunny is it in Denali National Park in September?

There are normally 5 hours of bright sunshine each day in Denali National Park in September - that's 41% of daylight hours.

Q: How warm is the sea around Denali National Park in September?

The average sea temperature around Denali National Park in September is 12°C.

Q: Does it rain in Denali National Park in September?

There are usually 14 days with some rain in Denali National Park in September and the average monthly rainfall is 68mm.

Expect daytime maximum temperatures of 43°F in Denali National Park, Alaska in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 1.8 inches of rainfall in the month.

43
43°F max day temperature
5
5 hours of sunshine per day
15
15 days with some rainfall
27
27°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
1.8
1.8 inches of monthly rainfall
2
2 (Low) UV index

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The September weather guide for Alaska (Denali National Park) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C) | Imperial (°F)

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How warm is it in Denali National Park in September?

Daytime temperatures usually reach 55°F in Denali National Park in September, falling to 41°F at night.

How sunny is it in Denali National Park in September?

There are normally 5 hours of bright sunshine each day in Denali National Park in September - that's 41% of daylight hours.

How warm is the sea around Denali National Park in September?

The average sea temperature around Denali National Park in September is 54°F.

Does it rain in Denali National Park in September?

There are usually 14 days with some rain in Denali National Park in September and the average monthly rainfall is 2.7 inches.

Denali National Park September sunrise & sunset times

Browse the sunrise and sunset times for Denali National Park in September 2026. Select a month to view Denali National Park sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Tuesday, 1st September 2026	05:47	20:13
Tuesday, 15th September 2026	06:26	19:25
Wednesday, 30th September 2026	07:08	18:33

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Alaska - quick facts
Flight time^✝	12 hours
Time difference	UK -9 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Nature
Tourist info	Alaska Travel Industry Association