May weather forecast
Fortim, Brazil

May, the last month of the autumn in Fortim, is another tropical month, with temperature in the range of an average high of 30.6°C (87.1°F) and an average low of 24.8°C (76.6°F).

Temperature

Fortim marks the start of May with an average high-temperature of a still tropical 30.6°C (87.1°F), hinting at a slight fluctuation from April's 30.7°C (87.3°F). During the month of May, Fortim anticipates a mean low-temperature of 24.8°C (76.6°F).

Heat index

Throughout May, the heat index is computed to be a sweltering 39°C (102.2°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. 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

The months with the highest humidity are April and May, with an average relative humidity of 77%.

Rainfall

In May, in Fortim, the rain falls for 19.2 days. Throughout May, 73mm (2.87") of precipitation is accumulated. In Fortim, during the entire year, the rain falls for 155.5 days and collects up to 547mm (21.54") of precipitation.

Daylight

In May, the average length of the day is 11h and 55min.
On the first day of May, sunrise is at 05:29 and sunset at 17:26. On the last day of the month, sunrise is at 05:32 and sunset at 17:25 -03.

Sunshine

The average sunshine in May is 8.5h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 7 during May translates into these guidelines:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.