May weather forecast
Guarabira, Brazil

May, the last month of the autumn in Guarabira, is also a hot month, with an average temperature varying between 21.3°C (70.3°F) and 30°C (86°F).

Temperature

As Guarabira steps into May, the average high-temperature holds at a still tropical 30°C (86°F), hinting at a minor fluctuation from the prior month. During the month of May, an average temperature of 21.3°C (70.3°F) is noted during the nights.

Heat index

Throughout May, the heat index is computed to be a torrid 39°C (102.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. 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 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The average relative humidity in May is 84%.

Rainfall

In Guarabira, Brazil, during May, the rain falls for 20 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, there are 205.7 rainfall days, and 444mm (17.48") of precipitation is accumulated.

Daylight

The average length of the day in May is 11h and 48min.
On the first day of May in Guarabira, sunrise is at 05:23 and sunset at 17:14. On the last day of the month, sunrise is at 05:27 and sunset at 17:12 -03.

Sunshine

The average sunshine in May is 5.9h.

UV index

The months with the lowest UV index in Guarabira are March through September, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 6 during May translates into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.