May weather forecastAlcântaras, Brazil

Weather in May

May, the last month of the autumn in Alcântaras, is another tropical month, with temperature in the range of an average high of 30.4°C (86.7°F) and an average low of 21.6°C (70.9°F).

Temperature

The average high-temperature is a still tropical 30.4°C (86.7°F) in May, hardly different from the 30.3°C (86.5°F) recorded in April. An average temperature of 21.6°C (70.9°F) is recorded during the nights in May.

Heat index

The heat index value for May is computed to be an extremely hot 40°C (104°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are extremely significant for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In May, the average relative humidity is 83%.

Rainfall

In May, the rain falls for 25.7 days. Throughout May, 119mm (4.69") of precipitation is accumulated. In Alcântaras, during the entire year, the rain falls for 204.6 days and collects up to 1055mm (41.54") of precipitation.

Daylight

The average length of the day in May in Alcântaras is 11h and 57min.
On the first day of May, sunrise is at 05:39 and sunset at 17:38. On the last day of the month, sunrise is at 05:42 and sunset at 17:37 -03.

Sunshine

In May, the average sunshine is 6.7h.

UV index

January through June, 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 threat to health from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 6 in May leads to these recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.