Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
The arrival of September marks a slight shift to an average high-temperature of a pleasant 20.6°C (69.1°F) from August's 19.3°C (66.7°F). During September, Rio Negrinho sees a mean low-temperature of 11.9°C (53.4°F).Humidity
In Rio Negrinho, the average relative humidity in September is 87%.Rainfall
In Rio Negrinho, in September, it is raining for 15.7 days, with typically 80mm (3.15") of accumulated precipitation. Throughout the year, in Rio Negrinho, there are 250.9 rainfall days, and 1446mm (56.93") of precipitation is accumulated.Snowfall
January through June, September through December are months without snowfall.Daylight
In Rio Negrinho, the average length of the day in September is 11h and 57min.On the first day of the month, sunrise is at 06:29 and sunset at 18:05. On the last day of September, sunrise is at 05:57 and sunset at 18:17 -03.
Sunshine
The average sunshine in September in Rio Negrinho is 6.8h.UV index
The months with the lowest UV index in Rio Negrinho are April through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Rio Negrinho?
What is the average humidity in September in Rio Negrinho?
How many days does it rain in September in Rio Negrinho?
When it does not snow in Rio Negrinho?
Does it snow in Rio Negrinho in September?
What is the average length of the day in September in Rio Negrinho?
What time are sunrise and sunset in September in Rio Negrinho?
How long on average sun shines in September in Rio Negrinho?
What are the months with the lowest UV index in Rio Negrinho?
What is the UV index reading in September in Rio Negrinho?
Average temperature in September
Rio Negrinho, Brazil
- Average high temperature in September: 20.6°C
The warmest month (with the highest average high temperature) is January (25.2°C).
The month with the lowest average high temperature is June (17.8°C).
- Average low temperature in September: 11.9°C
The month with the highest average low temperature is February (17.1°C).
The coldest month (with the lowest average low temperature) is July (9.8°C).
Average pressure in September
Rio Negrinho, Brazil
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is July (1020.4mbar).
The month with the lowest atmospheric pressure is December (1012.4mbar).
Average wind speed in September
Rio Negrinho, Brazil
- Average wind speed in September: 7.4km/h
The windiest months (with the highest average wind speed) are October and November (7.9km/h).
The calmest month (with the lowest average wind speed) is April (6.3km/h).
Average humidity in September
Rio Negrinho, Brazil
- Average humidity in September: 87%
The months with the highest relative humidity are February, March and May (91%).
The month with the lowest relative humidity is August (86%).
Average rainfall in September
Rio Negrinho, Brazil
- Average rainfall in September: 80mm
The wettest month (with the highest rainfall) is January (222mm).
The driest month (with the least rainfall) is August (54mm).
Average rainfall days in September
Rio Negrinho, Brazil
- Average rainfall days in September: 15.7 days
The month with the highest number of rainy days is January (28.9 days).
The month with the least rainy days is August (11.6 days).
Average snowfall in September
Rio Negrinho, Brazil
- Average snowfall in September: 0mm
The month with the highest snowfall is July (3mm).
The months with the least snowfall are January, February, March, April, May, June, September, October, November and December (0mm).
Average snowfall days in September
Rio Negrinho, Brazil
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are July and August (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Rio Negrinho, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is August (Average sunshine: 7h and 6min).
The month with the least sunshine is March (Average sunshine: 5h and 42min).
Average sunshine days in September
Rio Negrinho, Brazil
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is August (17.3 days).
The month with the least sunshine days is February (0.4 days).
Average UV index in September
Rio Negrinho, Brazil
- Average UV index in September: 4
The months with the highest UV index are January, February, March, October, November and December (UV index 5).
The months with the lowest UV index are April, May, June, July, August and September (UV index 4).
Average cloud cover in September
Rio Negrinho, Brazil
- Average cloud cover in September: 58
The month with the most cloud cover is March (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 51).
Average visibility in September
Rio Negrinho, Brazil
- Average visibility in September: 6km
The months with the highest visibility are January, February, March, June, July, August, September, October, November and December (6km).
The months with the lowest visibility are April and May (5km).
