Keaau Weather Forecast

    • 67
    • 76

    Rain Showers Likely

    • 66
    • 76

    Rain Showers Likely

    • 65
    • 76

    Rain Showers Likely

    • 64
    • 76

    Rain Showers

    • 65
    • 76

    Rain Showers

    • 64
    • 77

    Rain Showers

    • 65
    • 77

    Rain Showers

Today 20 May Big Island East

Occasional Showers in the Morning, then Showers likely in the afternoon. Highs 77 to 82 near the shore to 63 to 68 at 4000 feet. Northeast Winds up to 15 Mph. Chance of rain near 100 percent.

Tonight 20 May Big Island East

Mostly cloudy with occasional Showers. Lows 62 to 71 near the shore to around 56 at 4000 feet. North Winds up to 15 Mph. Chance of rain 90 percent.

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  • Temperature Forecast NOAA

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Keaau Temperature Statistics

May Temperature

Hilo, Hilo International Airport (6.8 miles)

  • Lowest 6 May, 2026

    66 °F

  • Average May

    74.4 °F

  • Highest 6 May, 2026

    82.9 °F

Climate (2021–Present)

Hilo, Hilo International Airport (6.8 miles)

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  • Average Low 2021–2026

    68.1 °F

  • Average 2021–2026

    74.4 °F

  • Average High 2021–2026

    82.1 °F
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