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Kailua, Big Island weather in October 2025
Expect daytime maximum temperatures of 22°C in Kailua, Big Island, Hawaii in October based on long-term weather averages. There are 16 days with some rainfall and typically 46 mm of rainfall in the month.
- 22°C max day temperature
22
- 16 days with some rainfall
16
- 14°C min night temperature
14
- 12 hours of daylight per day
12
- Moderate heat & humidity
M
- 46 mm of monthly rainfall
46
- 10 (Very High) UV index
10
- 27°C sea temperature
27
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Recommended for Hawaii
The October weather guide for Hawaii (Kailua, Big Island) 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 / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Kailua, Big Island in October?
Daytime temperatures usually reach 22°C in Kailua, Big Island in October, falling to 14°C at night.
How warm is the sea around Kailua, Big Island in October?
The average sea temperature around Kailua, Big Island in October is 27°C.
Does it rain in Kailua, Big Island in October?
There are usually 16 days with some rain in Kailua, Big Island in October and the average monthly rainfall is 46mm.
Kailua, Big Island October sunrise & sunset times
Browse the sunrise and sunset times for Kailua, Big Island in October 2025. Select a month to view Kailua, Big Island sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Wednesday, 1st October 2025 | 06:15 | 18:12 |
Thursday, 16th October 2025 | 06:19 | 17:59 |
Friday, 31st October 2025 | 06:25 | 17:50 |
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