Matanzas River - San Sebastian River Entrance Weather Forecast

    • 52
    • 72

    Decreasing Clouds

    • 57
    • 66

    Mostly Sunny

    • 59
    • 67

    Mostly Sunny

    • 60
    • 66

    Partly Sunny

    • 57
    • 68

    Mostly Sunny

    • 57
    • 69

    Mostly Sunny

Today 19 Dec Southeast Coastal St. Johns

Mostly sunny. Highs in the mid 70s. West Winds 10 to 15 Mph, becoming northwest in the afternoon.

Tonight 19 Dec Southeast Coastal St. Johns

Mostly clear. Much cooler. Less humid with Lows in the upper 40s. North Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Matanzas River - San Sebastian River Entrance Temperature Statistics

December Temperature

Northeast Florida Regional Airport (6.2 miles)

  • Lowest 16 December, 2025

    43 °F

  • Average December

    59 °F

  • Highest 2 December, 2025

    81 °F

Climate (2020–Present)

Northeast Florida Regional Airport (6.2 miles)

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  • Average Low 2020–2025

    63.6 °F

  • Average 2020–2025

    70.7 °F

  • Average High 2020–2025

    77.9 °F
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