August weather forecast
Manaus, Brazil

Cloudy skies above the Amazon Theatre building in Manaus, Brazil
Cloudy skies above the Amazon Theatre building in Manaus, Brazil

Weather in August

The last month of the winter, August, is also a hot month in Manaus, Brazil, with an average temperature varying between 23°C (73.4°F) and 32.6°C (90.7°F).

Temperature

In August, the average high-temperature is relatively the same as in July - a still tropical 32.6°C (90.7°F). In August, the average low-temperature is 23°C (73.4°F).

Heat index

In August, the average heat index is appraised at a burning hot 45°C (113°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'feels like', 'apparent temperature', or 'felt air temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, differences in body mass, height, and shape, metabolic differences), and activity. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

August and September, with an average relative humidity of 77%, are the least humid months.

Rainfall

The month with the least rainfall is August, when the rain falls for 6 days and typically collects 47mm (1.85") of precipitation.

Daylight

In August, the average length of the day is 12h and 1min.
On the first day of the month, sunrise is at 06:06 and sunset at 18:05. On the last day of August, sunrise is at 05:58 and sunset at 18:01 -04.

Sunshine

With an average of 7.3h of sunshine, August has the most sunshine of the year in Manaus.

UV index

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index in Manaus. A UV Index value of 11, and more, symbolizes an extreme threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 12 in August interpret into the following advice:
Take all required precautions, as unprotected skin and eyes can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.
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FAQ

What is the temperature in August in Manaus?

In August, the average high-temperature is 32.6°C (90.7°F), and the average low-temperature is 23°C (73.4°F). in August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, is appraised at 45°C (113°F).

What are the least humid months in Manaus?

The months with the lowest humidity are August and September, with an average relative humidity of 77%.

What is the average humidity in August in Manaus?

In August, the average relative humidity in Manaus is 77%.

What is the driest month in Manaus?

The month with the least rainfall is August, when the rain falls for 6 days and typically collects 47mm (1.85") of precipitation.

How much does it rain in Manaus in August?

In August, in Manaus, Brazil, the rain falls for 6 days. Throughout August, 47mm (1.85") of precipitation is accumulated.

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

The average day length in August in Manaus is 12h and 1min.

When are sunrise and sunset in August in Manaus?

On the first day of August in Manaus, Brazil, sunrise is at 06:06 and sunset at 18:05. On the last day of the month, sunrise is at 05:58 and sunset at 18:01 -04.

What month has the most sunshine in Manaus?

With an average of 7.3h of sunshine, August has the most sunshine of the year.

How long on average sun shines in August in Manaus?

In Manaus, Brazil, the average sunshine duration in August is 7.3h.

What are the months with the highest UV index in Manaus?

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index.

What is the UV index reading in August in Manaus?

The average daily maximum UV index in August in Manaus is 12. A UV Index of 11, and more, symbolizes an extreme health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average UV index

Average temperature in August
Manaus, Brazil

Average temperature in August - Manaus, Brazil
  • Average high temperature in August: 32.6°C

The warmest month (with the highest average high temperature) is September (32.9°C).
The month with the lowest average high temperature is February (30.4°C).

  • Average low temperature in August: 23°C

The months with the highest average low temperature are October and November (23.7°C).
The coldest month (with the lowest average low temperature) is July (22.7°C).

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Average humidity in August
Manaus, Brazil

Average humidity in August - Manaus, Brazil
  • Average humidity in August: 77%

The month with the highest relative humidity is March (88%).
The months with the lowest relative humidity are August and September (77%).

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Average rainfall in August
Manaus, Brazil

Average rainfall in August - Manaus, Brazil
  • Average rainfall in August: 47.3mm

The wettest month (with the highest rainfall) is March (335.4mm).
The driest month (with the least rainfall) is August (47.3mm).

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Average rainfall days in August
Manaus, Brazil

Average rainfall days in August - Manaus, Brazil
  • Average rainfall days in August: 6 days

The month with the highest number of rainy days is March (20 days).
The months with the least rainy days are August and September (6 days).

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Average daylight in August /
Average sunshine in August
Manaus, Brazil

Average daylight in August / Average sunshine in August - Manaus, Brazil
  • Average daylight in August: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 57min).

  • Average sunshine in August: 7h and 18min

The month with the most sunshine is August (Average sunshine: 7h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 6min).

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Average UV index in August
Manaus, Brazil

Average UV index in August - Manaus, Brazil
  • Average UV index in August: 12

The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 12).
The month with the lowest UV index is July (UV index 10).

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