Sullivan Island State Marine Park Weather Forecast

    • 52
    • 65

    Partly Sunny

    • 53
    • 68

    Mostly Cloudy

    • 53
    • 65

    Cloudy

    • 53
    • 66

    Mostly Cloudy

    • 54
    • 68

    Mostly Cloudy

    • 54
    • 69

    Mostly Cloudy

    • 53
    • 68

    Mostly Cloudy

Today 5 Aug Haines Borough and Klukwan

Mostly cloudy in the morning then clearing. Highs 61 to 69. Light Winds becoming south around 10 Mph.

Tonight 5 Aug Haines Borough and Klukwan

Partly cloudy. Lows around 50. Light Winds.

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Sullivan Island State Marine Park Temperature Statistics

August Temperature

Haines - Haines Airport (20.5 miles)

  • Lowest 1 August, 2026

    55.9 °F

  • Average August

    62.1 °F

  • Highest 1 August, 2026

    72 °F

Climate (2021–2026)

Haines - Haines Airport (20.5 miles)

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  • Average Low 2021–2026

    37.9 °F

  • Average 2021–2026

    43.1 °F

  • Average High 2021–2026

    48.4 °F
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