Ko Olina Beach Weather Forecast

    • 78
    • 86

    Partly Sunny

    • 78
    • 86

    Mostly Sunny

    • 79
    • 86

    Partly Sunny

    • 78
    • 86

    Mostly Cloudy

    • 77
    • 86

    Mostly Cloudy

    • 77
    • 85

    Breezy

Today 20 Sep Waianae Coast

Sunny and breezy. Highs 85 to 92. East Winds 15 to 20 Mph.

Tonight 20 Sep Waianae Coast

Partly cloudy. Lows 67 to 78. Northeast Winds 10 to 15 Mph.

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Ko Olina Beach Temperature Statistics

September Temperature

Oahu, Kalaeloa Airport (3.7 miles)

  • Lowest 13 September, 2026

    69.1 °F

  • Average September

    80 °F

  • Highest 16 September, 2026

    91 °F

Climate (2021–2026)

Oahu, Kalaeloa Airport (3.7 miles)

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  • Average Low 2021–2026

    70.2 °F

  • Average 2021–2026

    77.6 °F

  • Average High 2021–2026

    85.4 °F
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