Niihau Weather Forecast

    • 74
    • 85

    Rain Showers

    • 74
    • 85

    Rain Showers

    • 74
    • 86

    Rain Showers

    • 74
    • 86

    Rain Showers

    • 75
    • 86

    Mostly Cloudy

    • 75
    • 86

    Mostly Cloudy

Today 5 Aug Niihau

Mostly cloudy. Scattered Showers in the Morning, then isolated Showers in the afternoon. Highs 79 to 86. East Winds 10 to 15 Mph. Chance of rain 30 percent.

Tonight 5 Aug Niihau

Cloudy with isolated Showers. Lows 70 to 77. East Winds up to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

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Niihau Temperature Statistics

August Temperature

Kekaha, Pacific Missile Test Facility Barking Sands (25.5 miles)

  • Lowest 2 August, 2026

    73.9 °F

  • Average August

    80.9 °F

  • Highest 1 August, 2026

    87.1 °F

Climate (2021–2026)

Kekaha, Pacific Missile Test Facility Barking Sands (25.5 miles)

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  • Average Low 2021–2026

    70 °F

  • Average 2021–2026

    76.7 °F

  • Average High 2021–2026

    83 °F
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