Kailua, Oahu weather in October 2025

Expect 29°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Kailua, Oahu in October. Check more long-term weather averages for Kailua, Oahu in October before you book your next holiday to Hawaii in 2025/2026.

  • 29°C maximum daytime temperature in October in Kailua, Oahu29
    29°C max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in October in Kailua, Oahu9
    9 days with some rainfall
  • 21°C minimum night-time temperature in October in Kailua, Oahu21
    21°C min night temperature
  • 12 hours of daylight per day in October in Kailua, Oahu12
    12 hours of daylight per day
  • Moderate heat & humidity in October in Kailua, OahuM
    Moderate heat & humidity
  • 76 mm monthly rainfall in October in Kailua, Oahu76
    76 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in October in Kailua, Oahu9
    9 (Very High) UV index
  • 27°C sea temperature in October in Kailua, Oahu27
    27°C sea temperature

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The October 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Kailua, Oahu in October?

Daytime temperatures usually reach 29°C in Kailua, Oahu in October with moderate heat and humidity, falling to 21°C at night.

How sunny is it in Kailua, Oahu in October?

There are normally 8 hours of bright sunshine each day in Kailua, Oahu in October - that's 66% of daylight hours.

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

The average sea temperature around Kailua, Oahu in October is 27°C.

Does it rain in Kailua, Oahu in October?

There are usually 9 days with some rain in Kailua, Oahu in October and the average monthly rainfall is 76mm.

Kailua, Oahu October sunrise & sunset times

Browse the sunrise and sunset times for Kailua, Oahu in October 2025. Select a month to view Kailua, Oahu sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 06:22 18:18
Thursday, 16th October 2025 06:27 18:05
Friday, 31st October 2025 06:34 17:55

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