Manaus
Brazil
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Manaus, Brazil

Cloudy skies above the Amazon Theatre building in Manaus, Brazil
Cloudy skies above the Amazon Theatre building in Manaus, Brazil
May, the last month of the autumn, in Manaus, is also a hot month, with average temperature fluctuating between 30.6°C (87.1°F) and 23.3°C (73.9°F).

Temperature

In Manaus, Brazil, the average high-temperature is essentially the same as in April - a still hot 30.6°C (87.1°F). In May, the average low-temperature is 23.3°C (73.9°F).

Heat index

The average heat index in May is appraised at a scorching 42°C (107.6°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased 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', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, pregnancy, differences in body mass, height, and shape). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Manaus, Brazil, the average relative humidity is 87%.

Rainfall

In May, the rain falls for 17 days. Throughout May, 279.2mm (11") of precipitation is accumulated. Throughout the year, in Manaus, there are 160 rainfall days, and 2307.3mm (90.8") of precipitation is accumulated.

Daylight

In May, the average length of the day is 12h.

Sunshine

The average sunshine in Manaus is 4.8h.

UV index

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an extreme health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In May, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. 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.

What is the temperature in May in Manaus?

The average high-temperature, in May, is 30.6°C (87.1°F), while the average low-temperature is 23.3°C (73.9°F). In May, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that represents influence of the relative humidity to air temperaure, is evaluated at 42°C (107.6°F).

What is the average humidity in May in Manaus?

In May, the average relative humidity in Manaus, Brazil, is 87%.

How much does it rain in Manaus in May?

In May, in Manaus, Brazil, the rain falls for 17 days. Throughout May, 279.2mm (11") of precipitation is accumulated.

How many hours of daylight does Manaus have in May?

In May, the average length of the day in Manaus, Brazil, is 12h.

How many hours of sunshine does Manaus have in May?

In May, the average sunshine is 4.8h.

When is the highest UV index in Manaus?

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

What is the UV index intensity in May in Manaus?

In Manaus, the average daily maximum UV index in May is 12. A UV Index of 11, and more, symbolizes an extreme health threat from the exposure to the Sun's UV radiation.
Average temperature in May - Manaus, Brazil
  • Average high temperature in May: 30.6°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 May: 23.3°C

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).

Average humidity in May - Manaus, Brazil
  • Average humidity in May: 87%

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

Average rainfall in May - Manaus, Brazil
  • Average rainfall in May: 279.2mm

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

Average rainfall days in May - Manaus, Brazil
  • Average rainfall days in May: 17 days

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

Average daylight in May / Average sunshine in May - Manaus, Brazil
  • Average daylight in May: 12h

Months with the longest days are January, November and December (Average daylight: 12.3h).
The month with shortest days is June (Average daylight: 11.9h).

  • Average sunshine in May: 4.8h

The month with most sunshine is August (Average sunshine: 7.3h).
The month with least sunshine is February (Average sunshine: 3.1h).

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

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).