September weather forecast
Birigui, Brazil

September, the first month of the spring in Birigui, is a tropical month, with an average temperature ranging between max 31.6°C (88.9°F) and min 18.7°C (65.7°F).

Temperature

On the advent of September, Birigui's average high-temperature exhibits a minor adjustment to a tropical 31.6°C (88.9°F) from August's 29.4°C (84.9°F). The temperature notes a substantial fall from the daily peak to an average of 18.7°C (65.7°F) during September nights.

Heat index

The heat index for September is evaluated at a fiery hot 35°C (95°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. 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 extremely significant for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in September in Birigui is 55%.

Rainfall

In September, in Birigui, the rain falls for 9.5 days. Throughout September, 49mm (1.93") of precipitation is accumulated. In Birigui, Brazil, during the entire year, the rain falls for 194.5 days and collects up to 1131mm (44.53") of precipitation.

Daylight

The average length of the day in September is 11h and 59min.
On the first day of the month, sunrise is at 06:29 and sunset at 18:12. On the last day of September, in Birigui, sunrise is at 06:02 and sunset at 18:19 -03.

Sunshine

The average sunshine in September in Birigui is 9.3h.

UV index

The months with the highest UV index in Birigui are January through December, with an average maximum UV index of 6. The months with the lowest UV index in Birigui are January through December, with an average maximum UV index of 6. 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 maximum UV index of 6 in September interprets into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.