Waianapanapa State Park Weather Forecast

    • 75
    • 83

    Rain Showers

    • 75
    • 83

    Rain Showers

    • 75
    • 83

    Rain Showers

    • 75
    • 83

    Rain Showers

    • 75
    • 83

    Rain Showers

    • 75
    • 83

    Rain Showers

    • 74
    • 83

    Rain Showers

Today 23 Sep Windward Haleakala

Partly sunny in the morning then becoming mostly sunny. Scattered Showers. Highs 66 to 82. East Winds 10 to 15 Mph. Chance of rain 50 percent.

Tonight 23 Sep Windward Haleakala

Breezy. Numerous Showers and isolated Thunderstorms in the Evening, then Showers and isolated Thunderstorms after midnight. Locally heavy rainfall possible. Lows around 74 near the shore to around 59 near 5000 feet. East Winds 10 to 20 Mph. Chance of rain near 100 percent.

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Waianapanapa State Park Temperature Statistics

September Temperature

Kahului, Kahului Airport (29.2 miles)

  • Lowest 12 September, 2026

    66.9 °F

  • Average September

    80.1 °F

  • Highest 15 September, 2026

    91 °F

Climate (2021–2026)

Kahului, Kahului Airport (29.2 miles)

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  • Average Low 2021–2026

    69 °F

  • Average 2021–2026

    76.8 °F

  • Average High 2021–2026

    85.3 °F
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