Niihau Weather Forecast

    • 70
    • 80

    Rain Showers

    • 70
    • 80

    Mostly Sunny

    • 69
    • 79

    Mostly Sunny

    • 69
    • 79

    Mostly Sunny

    • 70
    • 79

    Mostly Sunny

    • 69
    • 80

    Mostly Sunny

    • 69
    • 79

    Mostly Sunny

Today 21 Apr Niihau

Mostly sunny in the morning then becoming partly sunny. Isolated Showers. Highs 77 to 82. Light Winds. Chance of rain 20 percent.

Tonight 21 Apr Niihau

Partly cloudy. Lows 67 to 73. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Niihau Temperature Statistics

April Temperature

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

  • Lowest 1 April, 2026

    62.1 °F

  • Average April

    73.3 °F

  • Highest 18 April, 2026

    82.9 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    69.9 °F

  • Average 2021–2026

    76.7 °F

  • Average High 2021–2026

    83 °F
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