July weather forecast
São Mateus do Maranhão, Brazil

July, the same as June, in São Mateus do Maranhão, Brazil, is another hot winter month, with an average temperature varying between 31.3°C (88.3°F) and 20.7°C (69.3°F).

Temperature

São Mateus do Maranhão records a slight change with July's average high-temperatures adjusting to a still tropical 31.3°C (88.3°F) from June's 30.3°C (86.5°F). July nights are marked by an average temperature drop to an agreeable 20.7°C (69.3°F).

Heat index

In July, the heat index is appraised at an extremely hot 40°C (104°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. 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 particularly meaningful for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in July is 76%.

Rainfall

In São Mateus do Maranhão, in July, it is raining for 14.2 days, with typically 27mm (1.06") of accumulated precipitation. In São Mateus do Maranhão, during the entire year, the rain falls for 247.2 days and collects up to 1281mm (50.43") of precipitation.

Daylight

The average length of the day in July is 11h and 55min.
On the first day of July, sunrise is at 06:05 and sunset at 17:58. On the last day of the month, sunrise is at 06:05 and sunset at 18:02 -03.

Sunshine

In July, the average sunshine is 7.6h.

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 reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 7 in July translates into this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.