May weather forecast
Calumbi, Brazil

May, the last month of the autumn in Calumbi, is another warm month, with temperature in the range of an average low of 19°C (66.2°F) and an average high of 29.8°C (85.6°F).

Temperature

Calumbi greets May with an average high-temperature of a warm 29.8°C (85.6°F), marking a slight deviation from the preceding month. Calumbi's May nights cool down to an average low-temperature of 19°C (66.2°F).

Heat index

May's mean heat index is calculated to be a very hot 36°C (96.8°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

With an average relative humidity of 75%, May is the most humid month.

Rainfall

In Calumbi, during May, the rain falls for 14.6 days and regularly aggregates up to 48mm (1.89") of precipitation. In Calumbi, during the entire year, the rain falls for 140.8 days and collects up to 430mm (16.93") of precipitation.

Daylight

The average length of the day in May is 11h and 45min.
On the first day of May, sunrise is at 05:34 and sunset at 17:24. On the last day of the month, sunrise is at 05:39 and sunset at 17:21 -03.

Sunshine

In May, the average sunshine in Calumbi is 7.4h.

UV index

The months with the lowest UV index are January, April through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In May, the maximum UV index of 6 suggests this advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.