Sullivan's Island Weather Forecast

    • 66
    • 82

    Mostly Sunny

    • 67
    • 81

    Partly Sunny

    • 53
    • 78

    Slight Chance Thunderstorms

    • 55
    • 68

    Mostly Sunny

    • 59
    • 70

    Partly Sunny

    • 61
    • 73

    Mostly Sunny

Today 17 Apr Charleston

Sunny. Highs in the lower 90s, except in the mid 80s near the coast. Southwest Winds 5 to 10 Mph.

Tonight 17 Apr Charleston

Mostly clear. Lows in the mid 60s. Southwest Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sullivan's Island Temperature Statistics

April Temperature

Mount Pleasant Regional-Faison Field (9.3 miles)

  • Lowest 9 April, 2026

    46.4 °F

  • Average April

    65.5 °F

  • Highest 11 April, 2026

    82.4 °F

Climate (2021–Present)

Mount Pleasant Regional-Faison Field (9.3 miles)

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  • Average Low 2021–2026

    58.3 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    75.4 °F
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