May weather forecast
Rio Uaçá, Brazil

The last month of the spring, May, is another warm month in Rio Uaçá, Brazil, with an average temperature varying between 22.3°C (72.1°F) and 28.8°C (83.8°F).

Temperature

Rio Uaçá experiences a subtle adjustment in high-temperatures to a still warm 28.8°C (83.8°F) with the onset of May, maintaining near parity with April's 28.7°C (83.7°F). Rio Uaçá witnesses a consistent average low-temperature of 22.3°C (72.1°F) throughout May.

Heat index

The heat index for May is estimated at a fiery hot 37°C (98.6°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

With an average relative humidity of 91%, May is the most humid month.

Rainfall

The month with the most rainfall is May, when the rain falls for 29.8 days and typically aggregates up to 215mm (8.46") of precipitation.

Daylight

In Rio Uaçá, the average length of the day in May is 12h and 17min.
On the first day of the month, sunrise is at 06:14 and sunset at 18:30. On the last day of May, sunrise is at 06:13 and sunset at 18:33 -03.

Sunshine

The average sunshine in May is 5.6h.

UV index

January through June and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in May translates into this advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.