May weather forecast
Cuiabá, Brazil

May brings a pleasant atmosphere to Cuiabá with a further drop in the maximum temperature reaching 31.6°C (88.9°F). The reduction in heat is coupled with a noticeable decrease in rainfall which makes May relatively dry. The dry and warm weather introduces a new seasonal dynamic, paving the way for different recreational activities. Despite the lesser rainfall, the number of sunshine hours remain steady, providing a warm, radiant ambiance throughout the day. May, therefore, stands as a moderate month with modest temperature changes in Cuiabá.

Temperature

In May, Cuiabá notes an average high-temperature of a still hot 31.6°C (88.9°F), hardly different from the preceding month. Throughout May nights, Cuiabá experiences a consistent temperature average of 19.7°C (67.5°F).

Heat index

The average heat index in May is evaluated at a blistering 41°C (105.8°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index determinations are made taking into account the shade and light air movements. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
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. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In Cuiabá, the average relative humidity in May is 75%.

Rainfall

In Cuiabá, in May, during 6 rainfall days, 54mm (2.13") of precipitation is typically accumulated. In Cuiabá, Brazil, during the entire year, the rain falls for 124 days and collects up to 1315mm (51.77") of precipitation.

Daylight

In May, the average length of the day is 11h and 23min.
On the first day of May, sunrise is at 05:55 and sunset at 17:27. On the last day of the month, sunrise is at 06:04 and sunset at 17:20 -04.

Sunshine

The average sunshine in May is 7h.

UV index

The average daily maximum UV index in May is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 9 in May interprets into the following advice:
With the absence of protection, damage to skin and eyes can occur instantly. Ensure precautions are taken. 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. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Even on overcast days, ensure the application and frequent reapplication of sunscreen with at least an SPF 30, especially post swim or outdoor exercise.