August weather forecast
Teresina, Brazil

August in Teresina carries forward the dry and sunny conditions observed in July. This month sees a slight increase in the day temperatures marking a hint of the approaching wet season. Teresina maintains the reduced 10mm (0.39") August rainfall observed in July, hence cementing the dry season. The weather conditions remain pleasant with fewer clouds and lower humidity levels. Overall, August manifests as an extension of the dry spell with stable temperatures, minimal clouds and precipitation, and increased visibility.

Temperature

Teresina marks the arrival of August with an average high-temperature of a torrid 35.1°C (95.2°F), hardly different from July's 32.8°C (91°F). August in Teresina witnesses a substantial contrast between the daytime highs and the average low of 22°C (71.6°F).

Heat index

The heat index value during August is calculated to be a scorching 41°C (105.8°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', determines the feeling of heat when you account for the relative humidity. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in August in Teresina is 50%.

Rainfall

In Teresina, in August, it is raining for 4.9 days, with typically 10mm (0.39") of accumulated precipitation. In Teresina, during the entire year, the rain falls for 207.4 days and collects up to 1348mm (53.07") of precipitation.

Daylight

In August, the average length of the day is 11h and 57min.
On the first day of the month, sunrise is at 06:00 and sunset at 17:54. On the last day of August, sunrise is at 05:50 and sunset at 17:51 -03.

Sunshine

The average sunshine in August in Teresina is 9.2h.

UV index

January, March through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 7 in August leads to these recommendations:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.