September weather forecast
Santa Fé do Sul, Brazil

The first month of the spring, September, is still a hot month in Santa Fé do Sul, Brazil, with an average temperature varying between 33.3°C (91.9°F) and 20.2°C (68.4°F).

Temperature

In Santa Fé do Sul, the average temperatures in September are the highest, with a peak at 33.3°C (91.9°F) and a low of 20.2°C (68.4°F).

Heat index

The heat index value during September is calculated to be a fiery hot 36°C (96.8°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Santa Fé do Sul, the average relative humidity in September is 48%.

Rainfall

In September, in Santa Fé do Sul, the rain falls for 8.5 days. Throughout September, 47mm (1.85") of precipitation is accumulated. Throughout the year, there are 209.8 rainfall days, and 1277mm (50.28") of precipitation is accumulated.

Daylight

In September, the average length of the day in Santa Fé do Sul, Brazil, is 11h and 59min.
On the first day of September in Santa Fé do Sul, sunrise is at 06:31 and sunset at 18:15. On the last day of the month, sunrise is at 06:05 and sunset at 18:21 -03.

Sunshine

The average sunshine in September is 9.4h.

UV index

August through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.