September weather forecast
Cuiabá, Brazil

September in Cuiabá is marked by a consistency in the high temperature, maintaining an average high of 34.1°C (93.4°F). It is one of the months with the highest temperatures and denotes the peak of dry season with an increase in rainfall. This month is characterized by intense heat, yet it also brings a notable increase in daylight. Despite the high UV Index of 12, its extended sunshine hours of 6 provide an ample time frame to absorb the best that this radiant city offers. Though warm, September is bright and lively, making it another excellent time for outdoor activities.

Temperature

August and September are the warmest months in Cuiabá, with an average high-temperature of 34.1°C (93.4°F).

Heat index

The heat index value during September is evaluated at a blisteringly hot 42°C (107.6°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The least humid month in Cuiabá is September, with an average relative humidity of 59%.

Rainfall

In Cuiabá, in September, during 5 rainfall days, 58mm (2.28") of precipitation is typically accumulated. Throughout the year, there are 124 rainfall days, and 1315mm (51.77") of precipitation is accumulated.

Daylight

In Cuiabá, the average length of the day in September is 12h and 1min.
On the first day of the month, sunrise is at 05:49 and sunset at 17:38. On the last day of September, sunrise is at 05:27 and sunset at 17:41 -04.

Sunshine

The average sunshine in September is 6h.

UV index

January through March, September through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 12 in September interprets into the following advice:
Execute all crucial precautions. Warding off sun exposure is non-negotiable. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Apply and frequently reapply a broad-spectrum SPF 30+ sunscreen after every two hours, or immediately after a swim or outdoor exercise.