Miami
Florida, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Miami, FL

The stunning layout of the Miami Coast in Florida, with a beautiful, clean beach, and perfect cityscape and skyline
The 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?

August 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).

What is the temperature in August in Miami?

In August, in Miami, the average high-temperature is 91°F (32.8°C), and the average low-temperature is 77.4°F (25.2°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), that factores the actual air temperature with the relative humidity, is calculated to 114.1°F (45.6°C).

What is the average humidity in August in Miami?

The average relative humidity in August is 76.2%.

How many days does it rain in August in Miami?

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

When is the ocean warmest in Miami?

The month with the warmest seawater in Miami is August, with an average ocean temperature of 86.5°F (30.3°C).

What is the ocean temperature in August in Miami?

In August, the average ocean temperature in Miami is 86.5°F (30.3°C). The surface water temperatures above 86°F (30°C) are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.

What is the average length of the day in August in Miami?

In August, the average length of the day is 13h.

How long on average sun shines in August in Miami?

In August, the average sunshine in Miami is 9.3h.

What is the month with the highest UV index in Miami?

Months with the highest UV index in Miami, Florida, are April through August, with an average maximum UV index of 11.

What is the UV index reading in August in Miami?

The average daily maximum UV index in August in Miami, Florida, is 11. A UV Index of 11, and more, symbolizes an ultimate hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in August - Miami, FL
  • Average high temperature in August: 91°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (76.4°F).

  • Average low temperature in August: 77.4°F

The month with the highest average low temperature is August (77.4°F).
The coldest month (with the lowest average low temperature) is January (59.9°F).

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: 5.7"

The wettest month (with the highest rainfall) is June (7.9").
The driest month (with the lowest rainfall) is December (1.7").

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: 86.5°F

The best month for swimming (with the highest average sea temperature) is August (86.5°F).
The coldest month (with the lowest average sea temperature) is February (74°F).

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).