August weather forecast and climate
Miami, FL

Stunning layout of the Miami Coast in Florida, with a beautiful, clean beach, and perfect cityscape and skyline
Stunning layout of the Miami Coast in Florida, with a beautiful, clean beach, and perfect cityscape and skyline
August is the peak of summer, with average temperatures regularly crossing 90°F (32.2°C). Hurricane season is also at its maximum, and there is no sensible reason to visit Miami during this time of year.
The sun is merciless when it peeks out of the cloudy skies during long summer days. There is a high risk of sunburns, and it is essential to take precautionary measures to avoid it.

What is the warmest month in Miami?

With an average high-temperature of 91°F (32.8°C) and an average low-temperature of 77.4°F (25.2°C), August is the warmest month.

What is the temperature in August in Miami?

The average high-temperature, in August, in Miami, is 91°F (32.8°C), while the average low-temperature is 77.4°F (25.2°C).

How many days does it rain in August in Miami?

In Miami, in August, it is raining for 18.9 days, with typically 5.7" (144mm) of accumulated precipitation.

When is the sea warmest in Miami?

August is the month with the warmest seawater in Miami, Florida, with an average sea temperature of 86.5°F (30.3°C). The water temperature above 86°F (30°C) is arguably regarded as unpleasant. The primary purpose of entering the water - cooling down from sunshine and high temperatures - is lost.

What is the sea water temperature in August in Miami?

In August, in Miami, Florida, the average sea temperature is 86.5°F (30.3°C). For swimming, other intense water activities, temperature above 86°F (30°C) is arguably unpleasant, as the water cooling effect is missing.
Average temperature in August - Miami, FL
  • Average high temperature in August: 32.8°C

The warmest month (with the highest average high temperature) is August (32.8°C).
The month with the lowest average high temperature is January (24.7°C).

  • Average low temperature in August: 25.2°C

Months with the highest average low temperature are July and August (25.2°C).
The coldest month (with the lowest average low temperature) is January (15.5°C).

Average humidity in August - Miami, FL
  • Average humidity in August: 76.2%

The month with the highest relative humidity is September (77.8%).
The month with the lowest relative humidity is April (67.3%).

Average rainfall in August - Miami, FL
  • Average rainfall in August: 144mm

The wettest month (with the highest rainfall) is June (201mm).
The driest month (with the lowest rainfall) is December (43mm).

Average rainfall days in August - Miami, FL
  • Average rainfall days in August: 18.9 days

The month with the highest number of rainy days is August (18.9 days).
The month with the lowest number of rainy days is April (6.4 days).

Average sea temperature in August - Miami, FL
  • Average sea temperature in August: 30.3°C

The best month for swimming (with the highest average sea temperature) is August (30.3°C).
The coldest month (with the lowest average sea temperature) is February (23.3°C).

Average daylight in August / Average sunshine in August - Miami, FL
  • Average daylight in August: 13h

The month with the longest days is June (Average daylight: 13.7h).
The month with shortest days is December (Average daylight: 10.5h).

  • Average sunshine in August: 9.3h

The month with most sunshine is July (Average sunshine: 10h).
The month with least sunshine is December (Average sunshine: 7h).

Average UV index in August - Miami, FL
  • Average UV index in August: 11

Months with the highest UV index are April, May, June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 5).

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