Koolau Forest Reserve Weather Forecast

    • 62
    • 71

    Rain Showers

    • 62
    • 71

    Rain Showers

    • 62
    • 73

    Rain Showers

    • 62
    • 73

    Rain Showers

    • 62
    • 72

    Rain Showers

    • 61
    • 72

    Rain Showers

Today 16 Sep Windward Haleakala

Partly sunny. Numerous Showers in the Morning, then scattered Showers in the afternoon. Highs 79 to 85 near the shore to around 66 near 5000 feet. East Winds 10 to 15 Mph. Chance of rain 70 percent.

Tonight 16 Sep Windward Haleakala

Mostly cloudy in the evening then becoming partly cloudy. Breezy. Scattered Showers. Lows around 73 near the shore to around 52 near 5000 feet. East Winds 10 to 20 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Koolau Forest Reserve Temperature Statistics

September Temperature

Kahului, Kahului Airport (17.4 miles)

  • Lowest 8 September, 2025

    64.9 °F

  • Average September

    79.6 °F

  • Highest 1 September, 2025

    93 °F

Climate (2020–Present)

Kahului, Kahului Airport (17.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    68.8 °F

  • Average 2020–2025

    76.8 °F

  • Average High 2020–2025

    85.6 °F
Get WillyWeather+ to remove ads