Port Royal Sound Weather Forecast

    • 55
    • 66

    Mostly Sunny

    • 62
    • 75

    Mostly Sunny

    • 63
    • 76

    Mostly Sunny

    • 57
    • 79

    Mostly Sunny

    • 56
    • 64

    Partly Sunny

    • 60
    • 69

    Partly Sunny

Today 20 Mar Beaufort

Sunny. Highs in the lower 70s, except in the upper 60s near the coast. Southeast Winds around 5 Mph.

Tonight 20 Mar Beaufort

Mostly clear. Lows in the mid 50s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Port Royal Sound Temperature Statistics

March Temperature

Hilton Head Island, Hilton Head Airport (3.1 miles)

  • Lowest 18 March, 2026

    37.4 °F

  • Average March

    61.5 °F

  • Highest 10 March, 2026

    82.4 °F

Climate (2021–Present)

Hilton Head Island, Hilton Head Airport (3.1 miles)

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  • Average Low 2021–2026

    60.7 °F

  • Average 2021–2026

    66.4 °F

  • Average High 2021–2026

    75 °F
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