May weather forecast
Barreirinha, Brazil

The last month of the autumn, May, is a hot month in Barreirinha, Brazil, with an average temperature varying between 23°C (73.4°F) and 30.8°C (87.4°F).

Temperature

Barreirinha, Brazil, in May witnesses an average high-temperature of a hot 30.8°C (87.4°F), indicating a slight variation from April's 29.9°C (85.8°F). Barreirinha throughout May, experiences an average nighttime temperature of 23°C (73.4°F).

Heat index

The heat index value during May is estimated at a blistering 42°C (107.6°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. 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 hold particular significance for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Barreirinha, the average relative humidity in May is 86%.

Rainfall

The month with the most rainfall is May, when the rain falls for 22.3 days and typically aggregates up to 92mm (3.62") of precipitation.

Daylight

In May, the average length of the day is 11h and 59min.
On the first day of May, sunrise is at 05:44 and sunset at 17:45. On the last day of the month, sunrise is at 05:46 and sunset at 17:45 -04.

Sunshine

The average sunshine in May is 7.4h.

UV index

In Barreirinha, the average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In May, the maximum UV index of 7 translates into these guidelines:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. 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.