Kauai Weather Forecast

    • 65
    • 76

    Rain Showers

    • 64
    • 76

    Rain Showers

    • 64
    • 76

    Rain Showers

    • 65
    • 76

    Rain Showers

    • 65
    • 76

    Rain Showers

    • 65
    • 76

    Rain Showers

    • 65
    • 75

    Rain Showers

Today 13 Sep Kauai Mountains

Partly sunny. Scattered Showers in the Morning, then isolated Showers in the afternoon. Highs 75 to 87 in the Valleys to 64 to 69 above 4000 feet. East Winds 10 to 15 Mph. Chance of rain 40 percent.

Tonight 13 Sep Kauai Mountains

Mostly cloudy with isolated Showers. Lows 66 to 72 in the Valleys to around 59 above 4000 feet. East Winds 10 to 15 Mph. Chance of rain 20 percent.

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Kauai Temperature Statistics

September Temperature

Lihue, Lihue Airport (13.7 miles)

  • Lowest 7 September, 2025

    71.1 °F

  • Average September

    79.3 °F

  • Highest 2 September, 2025

    84.9 °F

Climate (2020–Present)

Lihue, Lihue Airport (13.7 miles)

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  • Average Low 2020–2025

    71.8 °F

  • Average 2020–2025

    76.5 °F

  • Average High 2020–2025

    82.1 °F
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