Sullivan's Island Weather Forecast

    • 63
    • 74

    Decreasing Clouds

    • 65
    • 77

    Mostly Sunny

    • 67
    • 77

    Mostly Sunny

    • 65
    • 79

    Rain Showers Likely

    • 62
    • 75

    Chance Rain Showers

    • 66
    • 73

    Chance Rain Showers

Today 22 Apr Charleston

Sunny. Highs in the upper 70s.

Tonight 22 Apr Charleston

Mostly clear. Lows in the mid 60s. South Winds 10 to 15 Mph.

Graph Plots Open in Graphs

  • 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

    67.5 °F

  • Highest 17 April, 2026

    87.8 °F

Climate (2021–Present)

Mount Pleasant Regional-Faison Field (9.3 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    58.3 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    75.4 °F
Get WillyWeather+ to remove ads