May weather forecastChaval, Brazil

Weather in May

May, the last month of the autumn in Chaval, is another tropical month, with an average temperature ranging between min 22.7°C (72.9°F) and max 30.8°C (87.4°F).

Temperature

May brings an average high-temperature of a still hot 30.8°C (87.4°F), nearly identical to the preceding month. In Chaval, an average nighttime temperature of 22.7°C (72.9°F) is expected during May.

Heat index

For most parts of May, the heat index is computed to be a blistering 41°C (105.8°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in May is 82%.

Rainfall

In Chaval, Brazil, during May, the rain falls for 17 days and regularly aggregates up to 59mm (2.32") of precipitation. In Chaval, during the entire year, the rain falls for 141.3 days and collects up to 549mm (21.61") of precipitation.

Daylight

The average length of the day in May is 11h and 59min.
On the first day of the month, sunrise is at 05:41 and sunset at 17:42. On the last day of May, sunrise is at 05:44 and sunset at 17:41 -03.

Sunshine

The average sunshine in May is 7.8h.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The daily high UV index of 7 in May translates into this advice:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. 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. Employ a wide-brim hat for potent defense against up to 50% of UV rays.