Miami weather in August
Miami averages 31°C by day and 26°C at night in August, with the sea at 32°C and about 164 mm of rain in the month.
Day
31°C
Night
26°C
Sea
32°C
Rain
164 mm
Flight from London
9h
What August feels like
August is hot but wet in Miami: rainy season, so pack for showers.
The sea is warm at 32°C: comfortable for long swims.
It is rainy season: about 164 mm of rain falls in the month.
That is 8°C warmer than an average August day in London.
Of the 56 sun destinations we track, Miami is the #24 warmest in August.
Want it warmer in August?
These are hotter than Miami this month for at most an hour and a half more flying:
Miami weather by month
August is highlighted. Compare with July and September, or see the full year in Miami.
| Month | Day | Night | Sea | Rain |
|---|---|---|---|---|
| January | 24°C | 17°C | 22°C | 80 mm |
| February | 25°C | 20°C | 24°C | 63 mm |
| March | 26°C | 20°C | 25°C | 68 mm |
| April | 28°C | 22°C | 26°C | 79 mm |
| May | 29°C | 23°C | 29°C | 157 mm |
| June | 30°C | 25°C | 30°C | 237 mm |
| July | 31°C | 26°C | 32°C | 141 mm |
| August | 31°C | 26°C | 32°C | 164 mm |
| September | 30°C | 25°C | 31°C | 213 mm |
| October | 29°C | 24°C | 28°C | 156 mm |
| November | 27°C | 21°C | 26°C | 99 mm |
| December | 25°C | 19°C | 24°C | 87 mm |
Miami in August: quick answers
Is Miami hot in August?
August is hot but wet in Miami: rainy season, so pack for showers. Average highs are 31°C and lows 26°C.
Can you swim in Miami in August?
The sea is warm at 32°C: comfortable for long swims.
Does it rain in Miami in August?
It is rainy season: about 164 mm of rain falls in the month.
What is the warmest month in Miami?
August, at an average high of 31°C. The coolest is January at 24°C.
How long is the flight to Miami from the UK?
About 9h direct from London, estimated from the 7,105 km distance. Check your airline for exact times.
Still choosing? See where is hot in August for every destination ranked by temperature, sea and flight time.
How we measured this
Averages of every day in August from 2016 to 2025, from the Open-Meteo historical weather archive (ECMWF ERA5 reanalysis). Sea temperature is the 2023 to 2025 average from the Open-Meteo marine archive. Rain is the average monthly total. Reanalysis describes an area about 25 km across, so sheltered resorts can run a degree or two warmer. Flight time is a distance-based estimate from London Heathrow.
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