Biscayne National Park Weather Forecast

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    Chance Thunderstorms

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    Chance Thunderstorms

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    Slight Chance Thunderstorms

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Today 20 Aug Coastal Miami Dade County

Mostly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the lower 90s. South Winds 5 to 10 Mph. Chance of rain 50 percent. Heat index Values up to 109.

Tonight 20 Aug Coastal Miami Dade County

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the lower 80s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

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Biscayne National Park Temperature Statistics

August Temperature

Miami, Opa Locka Airport (8.7 miles)

  • Lowest 1 August, 2026

    75.7 °F

  • Average August

    86.4 °F

  • Highest 17 August, 2026

    96.1 °F

Climate (2021–2026)

Miami, Opa Locka Airport (8.7 miles)

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  • Average Low 2021–2026

    71.2 °F

  • Average 2021–2026

    78.4 °F

  • Average High 2021–2026

    86 °F
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