Is Miami hot in August?
Days are typically hot at 31.5°C, while nights average 26°C.
United States · 1991–2020 normal
Typical August weather in Miami: 31.5°C by day, 26°C at night, 181 mm of rain over 12.2 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, August scores 27 out of 100 (January leads the year at 89). Daylight is calculated as 13 h 02 from latitude 25.77°. Open-water sea temperature is 29.7°C (13 km from the place centre).
August at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically hot at 31.5°C, while nights average 26°C.
The measured monthly average is 181 mm across about 12 wet days.
There are about 13 h 02 between sunrise and sunset at mid-month, calculated from the place latitude.
August ranks 12 of 12 in our weather comparison; January ranks first.
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The nearest open-water NOAA OISST 1991–2020 cell averages 29.7°C in August. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
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The weather comparison for Miami is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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