Hawaii weather in September 2021

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Below are average maximum temperatures at popular destinations in Hawaii in September. Select a destination to see more weather parameters.

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The September weather guide for Hawaii 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.

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How hot is it in Hawaii in September?

Daytime temperatures usually reach 30°C in Honolulu, Oahu, Hawaii in September with high heat and humidity, falling to 22°C at night.

How sunny is it in Hawaii in September?

There are normally 9 hours of bright sunshine each day in Honolulu, Oahu, Hawaii in September - that's 74% of daylight hours.

How warm is the sea around Hawaii in September?

The average sea temperature around Honolulu, Oahu, Hawaii in September is 27°C.

Does it rain in Hawaii in September?

There are usually 8 days with some rain in Honolulu, Oahu, Hawaii in September and the average monthly rainfall is 18mm.

Metric (°C / mm)  |  Imperial (°F / inches)

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Hawaii sunrise & sunset times for September 2021

Browse the sunrise & sunset times for Hawaii in September 2021. Select a month to view Hawaii sunrise & sunset times for the next twelve months. The Hawaii sunrise & sunset times shown below are for Honolulu, Oahu.


Date Sunrise times Sunset times
Wednesday, 1st September 2021 06:15 18:47
Wednesday, 15th September 2021 06:19 18:34
Thursday, 30th September 2021 06:22 18:20
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