September weather forecastSão Jerônimo, Brazil
September
Weather in September
The first month of the spring, September, is still a pleasant month in São Jerônimo, Brazil, with an average temperature varying between 21.7°C (71.1°F) and 12.2°C (54°F).Temperature
The arrival of September brings an average high-temperature of a still pleasant 21.7°C (71.1°F), subtly diverging from August's 20.8°C (69.4°F). September nights experience a consistent temperature drop to a fresh 12.2°C (54°F).Humidity
The average relative humidity in September in São Jerônimo is 83%.Rainfall
The month with the least rainfall in São Jerônimo is September, when the rain falls for 10.5 days and typically collects 18mm (0.71") of precipitation.Daylight
In September, the average length of the day is 11h and 56min.On the first day of the month, sunrise is at 06:41 and sunset at 18:12. On the last day of September, in São Jerônimo, sunrise is at 06:05 and sunset at 18:27 -03.
Sunshine
With an average of 7.2h of sunshine, September has the least sunshine of the year in São Jerônimo.UV index
The average daily maximum UV index in September in São Jerônimo, Brazil, is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 5 in September suggests the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
São Jerônimo, Brazil
- Average high temperature in September: 21.7°C
The warmest month (with the highest average high temperature) is February (29.7°C).
The month with the lowest average high temperature is July (18.3°C).
- Average low temperature in September: 12.2°C
The months with the highest average low temperature are January and February (18.8°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).
Average pressure in September
São Jerônimo, Brazil
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is July (1020mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).
Average wind speed in September
São Jerônimo, Brazil
- Average wind speed in September: 10.1km/h
The windiest month (with the highest average wind speed) is August (10.3km/h).
The calmest month (with the lowest average wind speed) is May (8.9km/h).
Average humidity in September
São Jerônimo, Brazil
- Average humidity in September: 83%
The months with the highest relative humidity are May, June and July (84%).
The month with the lowest relative humidity is December (76%).
Average rainfall in September
São Jerônimo, Brazil
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is January (46mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in September
São Jerônimo, Brazil
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is January (16.9 days).
The month with the least rainy days is June (9.4 days).
Average daylight in September /
Average sunshine in September
São Jerônimo, Brazil
- Average daylight in September: 11h and 54min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 12min).
- Average sunshine in September: 7h and 12min
The month with the most sunshine is December (Average sunshine: 8h and 30min).
The month with the least sunshine is September (Average sunshine: 7h and 12min).
Average sunshine days in September
São Jerônimo, Brazil
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is January (11.6 days).
Average UV index in September
São Jerônimo, Brazil
- Average UV index in September: 5
The months with the highest UV index are January, February, March, November and December (UV index 6).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in September
São Jerônimo, Brazil
- Average cloud cover in September: 40
The month with the most cloud cover is September (Cloud cover 40).
The month with the least cloud cover is November (Cloud cover 31).
Average visibility in September
São Jerônimo, Brazil
- Average visibility in September: 8km
The months with the highest visibility are February, April, June, July, August, November and December (9km).
The months with the lowest visibility are January, March, May, September and October (8km).
