Kailua, Oahu weather in September 2024

Expect 86°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Kailua, Oahu in September. Check more long-term weather averages for Kailua, Oahu in September before you book your next holiday to Hawaii in 2024/2025.

86
86°F max day temperature
9
9 hours of sunshine per day
8
8 days with some rainfall
72
72°F min night temperature
12
12 hours of daylight per day
H
High heat & humidity
1.7
1.7 inches of monthly rainfall
11
11 (Extreme) UV index
81
81°F sea temperature

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Kailua, Oahu by month

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The September weather guide for Hawaii (Kailua, Oahu) 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)

More about the USA

How hot is it in Kailua, Oahu in September?

Daytime temperatures usually reach 86°F in Kailua, Oahu in September with high heat and humidity, falling to 72°F at night.

How sunny is it in Kailua, Oahu in September?

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

How warm is the sea around Kailua, Oahu in September?

The average sea temperature around Kailua, Oahu in September is 81°F.

Does it rain in Kailua, Oahu in September?

There are usually 8 days with some rain in Kailua, Oahu in September and the average monthly rainfall is 1.7 inches.

Kailua, Oahu September sunrise & sunset times

Browse the sunrise and sunset times for Kailua, Oahu in September 2024. Select a month to view Kailua, Oahu 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
Sunday, 1st September 2024	06:15	18:46
Sunday, 15th September 2024	06:18	18:33
Monday, 30th September 2024	06:22	18:19

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Hawaii - quick facts
Flight time^✝	18 hours
Time difference	UK -10 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Beaches Nature Nightlife
Tourist info	Hawaii Tourism Authority