May weather forecastMacaíba, Brazil

Weather in May

May, the last month of the autumn in Macaíba, is another hot month, with temperature in the range of an average low of 23.9°C (75°F) and an average high of 30.5°C (86.9°F).

Temperature

The initiation of May records an average high-temperature of a still tropical 30.5°C (86.9°F), displaying a near consistency with the previous month. Nighttime temperatures hover around an average low of 23.9°C (75°F) in May.

Heat index

In May, the average heat index is evaluated at a fiery hot 39°C (102.2°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. 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. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

May through July, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Macaíba, in May, during 16.8 rainfall days, 40mm (1.57") of precipitation is typically accumulated. Throughout the year, there are 184.7 rainfall days, and 414mm (16.3") of precipitation is accumulated.

Daylight

In May, the average length of the day in Macaíba is 11h and 51min.
On the first day of May in Macaíba, sunrise is at 05:21 and sunset at 17:15. On the last day of the month, sunrise is at 05:25 and sunset at 17:13 -03.

Sunshine

In Macaíba, Brazil, the average sunshine in May is 7.3h.

UV index

The months with the highest UV index are January through June, August through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, an average UV index of 7 transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.