August weather forecast
São Mateus do Maranhão, Brazil

August, the last month of the winter in São Mateus do Maranhão, is also a hot month, with temperature in the range of an average low of 21.1°C (70°F) and an average high of 33.9°C (93°F).

Temperature

São Mateus do Maranhão's shift from July to August is accompanied by an average high-temperature of a still hot 33.9°C (93°F), a slight deviation from 31.3°C (88.3°F). São Mateus do Maranhão records a significant temperature drop in August nights, lowering to an average of 21.1°C (70°F).

Heat index

Throughout August, the heat index is appraised at a burning hot 45°C (113°F). Attention: Heat exhaustion and heat cramps are anticipated. Prolonged effort can result in heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in August in São Mateus do Maranhão is 66%.

Rainfall

In São Mateus do Maranhão, in August, during 8.8 rainfall days, 13mm (0.51") of precipitation is typically accumulated. Throughout the year, in São Mateus do Maranhão, there are 247.2 rainfall days, and 1281mm (50.43") of precipitation is accumulated.

Daylight

In August, the average length of the day in São Mateus do Maranhão is 11h and 59min.
On the first day of August in São Mateus do Maranhão, sunrise is at 06:05 and sunset at 18:02. On the last day of the month, sunrise is at 05:56 and sunset at 17:59 -03.

Sunshine

In São Mateus do Maranhão, the average sunshine in August is 8.5h.

UV index

January, July through November, with an average maximum UV index of 7, are months with the highest UV index in São Mateus do Maranhão. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: During August, 7 as the daily maximum UV index converts into the following advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.