May weather forecast
Açu, Brazil

The last month of the autumn, May, is another hot month in Açu, Brazil, with an average temperature fluctuating between 32.7°C (90.9°F) and 22.8°C (73°F).

Temperature

Upon the beginning of May, Açu's high-temperatures register at a still tropical 32.7°C (90.9°F), closely mirroring the preceding month. Açu throughout May, experiences an average nighttime temperature of 22.8°C (73°F).

Heat index

The heat index for May is appraised at an extremely hot 43°C (109.4°F). Keep on guard: Heat exhaustion and heat cramps are probable. Heatstroke is a possible danger with ongoing physical activity.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In May, the average relative humidity is 72%.

Rainfall

In Açu, Brazil, during May, the rain falls for 15.8 days and regularly aggregates up to 50mm (1.97") of precipitation. In Açu, during the entire year, the rain falls for 112.4 days and collects up to 381mm (15") of precipitation.

Daylight

In Açu, the average length of the day in May is 11h and 52min.
On the first day of the month, sunrise is at 05:27 and sunset at 17:22. On the last day of May, sunrise is at 05:30 and sunset at 17:20 -03.

Sunshine

In May, the average sunshine in Açu is 8.6h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 7 during May translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.