Hilo, Big Island weather in April 2025

Expect 22°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Hilo, Big Island in April. Check more long-term weather averages for Hilo, Big Island in April before you book your next holiday to Hawaii in 2025/2026.

  • 22°C maximum daytime temperature in April in Hilo, Big Island22
    22°C max day temperature
  • 5 hours of sunshine per day
  • 16 days with some rainfall in April in Hilo, Big Island16
    16 days with some rainfall
  • 14°C minimum night-time temperature in April in Hilo, Big Island14
    14°C min night temperature
  • 13 hours of daylight per day in April in Hilo, Big Island13
    13 hours of daylight per day
  • Low heat & humidity in April in Hilo, Big IslandL
    Low heat & humidity
  • 293 mm monthly rainfall in April in Hilo, Big Island293
    293 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in April in Hilo, Big Island11
    11+ (Extreme) UV index
  • 24°C sea temperature in April in Hilo, Big Island24
    24°C sea temperature

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The April weather guide for Hawaii (Hilo, 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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More about the USA

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

Daytime temperatures usually reach 22°C in Hilo, Big Island in April, falling to 14°C at night.

How sunny is it in Hilo, Big Island in April?

There are normally 5 hours of bright sunshine each day in Hilo, Big Island in April - that's 37% of daylight hours.

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

The average sea temperature around Hilo, Big Island in April is 24°C.

Does it rain in Hilo, Big Island in April?

There are usually 16 days with some rain in Hilo, Big Island in April and the average monthly rainfall is 293mm.

Hilo, Big Island April sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st April 2025 06:14 18:35
Tuesday, 15th April 2025 06:02 18:39
Wednesday, 30th April 2025 05:52 18:43

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