September weather forecast
Corumbá, Brazil

The first month of the spring, September, is still a hot month in Corumbá, Brazil, with an average temperature fluctuating between 34.9°C (94.8°F) and 21.2°C (70.2°F).

Temperature

September's weather displays an average high-temperature of a still hot 34.9°C (94.8°F), slightly varied from August's 32.3°C (90.1°F). Nightly average temperatures in September reveal a significant dip from daytime highs, registering a consistent an agreeable 21.2°C (70.2°F).

Heat index

September's heat index is computed to be a scorching 40°C (104°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to 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.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

August and September, with an average relative humidity of 48%, are the least humid months.

Rainfall

In September, in Corumbá, Brazil, the rain falls for 5.8 days. Throughout September, 16mm (0.63") of precipitation is accumulated. Throughout the year, there are 152.3 rainfall days, and 718mm (28.27") of precipitation is accumulated.

Daylight

In Corumbá, the average length of the day in September is 12h and 0min.
On the first day of September in Corumbá, sunrise is at 05:57 and sunset at 17:43. On the last day of the month, sunrise is at 05:32 and sunset at 17:48 -04.

Sunshine

With an average of 9.3h of sunshine, September has the most sunshine of the year in Corumbá.

UV index

January, March, August through November, 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 unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 7 during September translates into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.