Kailua, Big Island weather in April 2025

Expect 20°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Kailua, Big Island in April. Check more long-term weather averages for Kailua, Big Island in April before you book your next holiday to Hawaii in 2025/2026.

  • 20°C maximum daytime temperature in April in Kailua, Big Island20
    20°C max day temperature
  • 16 days with some rainfall in April in Kailua, Big Island16
    16 days with some rainfall
  • 13°C minimum night-time temperature in April in Kailua, Big Island13
    13°C min night temperature
  • 13 hours of daylight per day in April in Kailua, Big Island13
    13 hours of daylight per day
  • Low heat & humidity in April in Kailua, Big IslandL
    Low heat & humidity
  • 64 mm monthly rainfall in April in Kailua, Big Island64
    64 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Kailua, Big Island11
    11+ (Extreme) UV index
  • 25°C sea temperature in April in Kailua, Big Island25
    25°C sea temperature

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The April 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)

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How hot is it in Kailua, Big Island in April?

Daytime temperatures usually reach 20°C in Kailua, Big Island in April, falling to 13°C at night.

How warm is the sea around Kailua, Big Island in April?

The average sea temperature around Kailua, Big Island in April is 25°C.

Does it rain in Kailua, Big Island in April?

There are usually 16 days with some rain in Kailua, Big Island in April and the average monthly rainfall is 64mm.

Kailua, Big Island April sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st April 2025 06:17 18:38
Tuesday, 15th April 2025 06:06 18:42
Wednesday, 30th April 2025 05:56 18:47

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