May weather forecast
Riacho Frio, Brazil

The last month of the autumn, May, is also a moderately hot month in Riacho Frio, Brazil, with an average temperature varying between 18.8°C (65.8°F) and 29.9°C (85.8°F).

Temperature

Riacho Frio's weather in May indicates an average high-temperature of a still moderately hot 29.9°C (85.8°F), nearly consistent with the 29.8°C (85.6°F) of April. Throughout May, Riacho Frio witnesses a nighttime temperature average of 18.8°C (65.8°F).

Heat index

The heat index value during May is estimated at a very hot 36°C (96.8°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Heat index specifics point out values are for conditions of shade and a slight breeze. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In May, the average relative humidity is 74%.

Rainfall

In May, in Riacho Frio, the rain falls for 11 days. Throughout May, 24mm (0.94") of precipitation is accumulated. Throughout the year, in Riacho Frio, Brazil, there are 134.3 rainfall days, and 578mm (22.76") of precipitation is accumulated.

Daylight

In Riacho Frio, the average length of the day in May is 11h and 39min.
On the first day of May in Riacho Frio, sunrise is at 06:04 and sunset at 17:49. On the last day of the month, sunrise is at 06:10 and sunset at 17:44 -03.

Sunshine

In May, the average sunshine in Riacho Frio is 6.8h.

UV index

January through July, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 6 translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.