Keaau Weather Forecast

    • 67
    • 81

    Rain Showers

    • 68
    • 82

    Rain Showers

    • 69
    • 82

    Rain Showers

    • 68
    • 82

    Rain Showers

    • 67
    • 81

    Rain Showers

    • 67
    • 80

    Rain Showers

Today 17 Sep Big Island East

Partly sunny with scattered Showers. Highs 80 to 87 near the shore to around 68 at 4000 feet. Northeast Winds up to 15 Mph shifting to the east in the afternoon. Chance of rain 50 percent.

Tonight 17 Sep Big Island East

Mostly cloudy with scattered Showers. Lows 65 to 72 near the shore to 51 to 58 at 4000 feet. East Winds up to 10 Mph shifting to the northwest after midnight. Chance of rain 50 percent.

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Keaau Temperature Statistics

September Temperature

Hilo, Hilo International Airport (6.8 miles)

  • Lowest 10 September, 2025

    66.9 °F

  • Average September

    76.8 °F

  • Highest 6 September, 2025

    88 °F

Climate (2020–Present)

Hilo, Hilo International Airport (6.8 miles)

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  • Average Low 2020–2025

    68.2 °F

  • Average 2020–2025

    74.5 °F

  • Average High 2020–2025

    82.4 °F
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