South Bay Weather Forecast

    • 64
    • 70

    Mostly Sunny

    • 64
    • 72

    Mostly Sunny

    • 66
    • 74

    Sunny

    • 67
    • 74

    Sunny

    • 67
    • 78

    Sunny

    • 67
    • 77

    Mostly Sunny

Today 18 Mar Aransas Islands

Sunny. Highs around 70. Southeast Winds around 10 Mph.

Tonight 18 Mar Aransas Islands

Mostly clear. Lows in the lower 60s. Southeast Winds 5 to 10 Mph.

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South Bay Temperature Statistics

March Temperature

Port Aransas, Mustang Beach Airport (5.6 miles)

  • Lowest 16 March, 2026

    51.6 °F

  • Average March

    71.1 °F

  • Highest 11 March, 2026

    89.2 °F

Climate (2021–Present)

Port Aransas, Mustang Beach Airport (5.6 miles)

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  • Average Low 2021–2026

    69.3 °F

  • Average 2021–2026

    73.8 °F

  • Average High 2021–2026

    78.6 °F
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