May weather forecast
Siriri, Brazil

The last month of the autumn, May, is also a moderately hot month in Siriri, Brazil, with an average temperature varying between 23.3°C (73.9°F) and 29.3°C (84.7°F).

Temperature

The initiation of May sees an average high-temperature of a warm 29.3°C (84.7°F), showing minor variations from the previous month. An average temperature of 23.3°C (73.9°F) is recorded in Siriri during the nights in May.

Heat index

The heat index in May is appraised at a sweltering 36°C (96.8°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Siriri, the average relative humidity in May is 80%.

Rainfall

In May, the rain falls for 20.4 days. Throughout May, 86mm (3.39") of precipitation is accumulated. In Siriri, during the entire year, the rain falls for 211.1 days and collects up to 584mm (22.99") of precipitation.

Daylight

In May, the average length of the day is 11h and 38min.
On the first day of May, sunrise is at 05:33 and sunset at 17:17. On the last day of the month, sunrise is at 05:39 and sunset at 17:12 -03.

Sunshine

May, July and October, with an average of 7.4h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index are May through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 6 during May leads to these advisories:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.