May weather forecast
São João do Rio do Peixe, Brazil

May, the last month of the autumn in São João do Rio do Peixe, is another tropical month, with an average temperature varying between 30.1°C (86.2°F) and 20°C (68°F).

Temperature

The average high-temperature during May registers at a still tropical 30.1°C (86.2°F), closely corresponding to the preceding month. An average low-temperature of 20°C (68°F) is recorded during the nights in May.

Heat index

May's heat index is computed to be a fiery hot 37°C (98.6°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. 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 are especially crucial for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In São João do Rio do Peixe, the average relative humidity in May is 75%.

Rainfall

In São João do Rio do Peixe, in May, it is raining for 18 days, with typically 78mm (3.07") of accumulated precipitation. In São João do Rio do Peixe, Brazil, during the entire year, the rain falls for 159.2 days and collects up to 757mm (29.8") of precipitation.

Daylight

In São João do Rio do Peixe, the average length of the day in May is 11h and 49min.
On the first day of the month, sunrise is at 05:34 and sunset at 17:26. On the last day of May, sunrise is at 05:38 and sunset at 17:24 -03.

Sunshine

In São João do Rio do Peixe, the average sunshine in May is 8h.

UV index

January, February, April through July, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 in May translates into these instructions:
Fend off overexposure. Sun protection is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.