Koloa Weather Forecast

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    • 89

    Rain Showers

    • 74
    • 89

    Rain Showers

    • 74
    • 88

    Rain Showers

    • 75
    • 89

    Rain Showers

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    • 88

    Rain Showers

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    • 89

    Rain Showers

Today 6 Sep Kauai South

Sunny. Isolated Showers in the morning. Highs 84 to 91. East Winds around 10 Mph. Chance of rain 20 percent.

Tonight 6 Sep Kauai South

Mostly clear in the Evening, then mostly cloudy with scattered Showers after midnight. Lows 70 to 75. Northeast Winds around 10 Mph in the evening becoming light. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Koloa Temperature Statistics

September Temperature

Lihue, Lihue Airport (9.3 miles)

  • Lowest 1 September, 2025

    72 °F

  • Average September

    79.9 °F

  • Highest 2 September, 2025

    84.9 °F

Climate (2020–Present)

Lihue, Lihue Airport (9.3 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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