September weather forecastRio Sono, Brazil
September
Weather in September
The first month of the spring, September, is also a fiery hot month in Rio Sono, Brazil, with an average temperature varying between 24.7°C (76.5°F) and 37.5°C (99.5°F).Temperature
September is the warmest month of the year, registering average temperatures as high as 37.5°C (99.5°F) and as low as 24.7°C (76.5°F).Humidity
With an average relative humidity of 34%, September is the least humid month.Rainfall
In Rio Sono, in September, during 4.4 rainfall days, 8mm (0.31") of precipitation is typically accumulated. Throughout the year, in Rio Sono, there are 198 rainfall days, and 907mm (35.71") of precipitation is accumulated.Daylight
In Rio Sono, Brazil, the average length of the day in September is 12h and 4min.On the first day of September, sunrise is at 06:13 and sunset at 18:09. On the last day of the month, sunrise is at 05:55 and sunset at 18:06 -03.
Sunshine
In September, the average sunshine is 9.9h.UV index
August and September, with an average maximum UV index of 8, are months with the highest UV index. A UV Index of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 8 during September, leads to the following recommendations:
Take the necessary steps to protect yourself; unprotected skin and eyes are vulnerable to damage. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Rio Sono, Brazil
- Average high temperature in September: 37.5°C
The warmest month (with the highest average high temperature) is September (37.5°C).
The months with the lowest average high temperature are February, March and April (30.3°C).
- Average low temperature in September: 24.7°C
The month with the highest average low temperature is September (24.7°C).
The coldest month (with the lowest average low temperature) is July (20.3°C).
Average pressure in September
Rio Sono, Brazil
- Average pressure in September: 1011mbar
The months with the highest atmospheric pressure are June and July (1014.1mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in September
Rio Sono, Brazil
- Average wind speed in September: 7.7km/h
The windiest months (with the highest average wind speed) are August and September (7.7km/h).
The calmest month (with the lowest average wind speed) is March (4.4km/h).
Average humidity in September
Rio Sono, Brazil
- Average humidity in September: 34%
The month with the highest relative humidity is March (85%).
The month with the lowest relative humidity is September (34%).
Average rainfall in September
Rio Sono, Brazil
- Average rainfall in September: 8mm
The wettest month (with the highest rainfall) is March (147mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in September
Rio Sono, Brazil
- Average rainfall days in September: 4.4 days
The month with the highest number of rainy days is March (28.3 days).
The months with the least rainy days are July and August (0.6 days).
Average daylight in September /
Average sunshine in September
Rio Sono, Brazil
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 42min).
The month with the shortest days is June (Average daylight: 11h and 36min).
- Average sunshine in September: 9h and 54min
The month with the most sunshine is October (Average sunshine: 10h and 48min).
The month with the least sunshine is May (Average sunshine: 7h and 18min).
Average sunshine days in September
Rio Sono, Brazil
- Average sunshine days in September: 24.6 days
The month with the most sunshine days is July (30.4 days).
The month with the least sunshine days is March (1.6 days).
Average UV index in September
Rio Sono, Brazil
- Average UV index in September: 8
The months with the highest UV index are August and September (UV index 8).
The months with the lowest UV index are February, March, April, May and December (UV index 6).
Average cloud cover in September
Rio Sono, Brazil
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in September
Rio Sono, Brazil
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April and December (8km).
