Kailua Kona Weather Forecast

    • 76
    • 86

    Isolated Thunderstorms

    • 76
    • 87

    Rain Showers

    • 75
    • 87

    Rain Showers

    • 75
    • 85

    Rain Showers

    • 75
    • 85

    Mostly Cloudy

    • 74
    • 85

    Mostly Cloudy

    • 74
    • 85

    Mostly Cloudy

Today 25 Sep Kona

Mostly sunny with isolated Showers. Highs 69 to 90. Light Winds becoming southwest up to 10 Mph in the afternoon. Chance of rain 20 percent.

Tonight 25 Sep Kona

Cloudy with scattered Showers and isolated Thunderstorms. Locally heavy rainfall possible in the late evening and overnight. Lows 71 to 77 near the shore to around 61 near 5000 feet. South Winds up to 10 Mph. Chance of rain 50 percent.

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Kailua Kona Temperature Statistics

September Temperature

Kailua / Kona, Keahole Airport (7.5 miles)

  • Lowest 1 September, 2026

    75.9 °F

  • Average September

    82.6 °F

  • Highest 4 September, 2026

    89.1 °F

Climate (2021–2026)

Kailua / Kona, Keahole Airport (7.5 miles)

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  • Average Low 2021–2026

    73.4 °F

  • Average 2021–2026

    79.1 °F

  • Average High 2021–2026

    84.8 °F
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