September weather forecastUsuri, Bolivia
September
Weather in September
The first month of the spring, September, is a hot month in Usuri, Bolivia, with an average temperature varying between 19.6°C (67.3°F) and 30.6°C (87.1°F).Temperature
The commencement of September notes an average high-temperature of a hot 30.6°C (87.1°F), exhibiting little difference from the previous month. September nights observe an average temperature dip to an enjoyable 19.6°C (67.3°F).Heat index
Throughout September, the heat index is computed to be a tropical 32°C (89.6°F). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Humidity
With an average relative humidity of 51%, September is the least humid month.Rainfall
In Usuri, in September, it is raining for 7.1 days, with typically 18mm (0.71") of accumulated precipitation. Throughout the year, there are 162.3 rainfall days, and 653mm (25.71") of precipitation is accumulated.Daylight
In Usuri, the average length of the day in September is 12h and 1min.On the first day of the month, sunrise is at 06:19 and sunset at 18:05. On the last day of September, sunrise is at 05:54 and sunset at 18:10 -04.
Sunshine
The average sunshine in September is 9.6h.UV index
January, March, August through October, 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 threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 7 in September transforms into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Usuri, Bolivia
- Average high temperature in September: 30.6°C
The warmest month (with the highest average high temperature) is October (31.5°C).
The month with the lowest average high temperature is June (23.8°C).
- Average low temperature in September: 19.6°C
The months with the highest average low temperature are November and December (21.7°C).
The coldest month (with the lowest average low temperature) is July (15.3°C).
Average pressure in September
Usuri, Bolivia
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is July (1015.3mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed in September
Usuri, Bolivia
- Average wind speed in September: 14.3km/h
The windiest month (with the highest average wind speed) is August (14.5km/h).
The calmest month (with the lowest average wind speed) is March (10.3km/h).
Average humidity in September
Usuri, Bolivia
- Average humidity in September: 51%
The months with the highest relative humidity are February and May (78%).
The month with the lowest relative humidity is September (51%).
Average rainfall in September
Usuri, Bolivia
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is December (95mm).
The driest month (with the least rainfall) is August (15mm).
Average rainfall days in September
Usuri, Bolivia
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is January (19.8 days).
The month with the least rainy days is August (5.8 days).
Average daylight in September /
Average sunshine in September
Usuri, Bolivia
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 6min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is October (Average sunshine: 10h and 42min).
The months with the least sunshine are May and June (Average sunshine: 5h and 42min).
Average sunshine days in September
Usuri, Bolivia
- Average sunshine days in September: 21.5 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in September
Usuri, Bolivia
- Average UV index in September: 7
The months with the highest UV index are January, March, August, September and October (UV index 7).
The months with the lowest UV index are May and June (UV index 5).
Average cloud cover in September
Usuri, Bolivia
- Average cloud cover in September: 22
The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are August and September (Cloud cover 22).
Average visibility in September
Usuri, Bolivia
- Average visibility in September: 10km
The months with the highest visibility are August, September and October (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, November and December (9km).





