September weather forecastViamão, Brazil
September
Weather in September
September, the first month of the spring in Viamão, is still a pleasant month, with an average temperature ranging between min 13.5°C (56.3°F) and max 21.9°C (71.4°F).Temperature
The initiation of September records an average high-temperature of a still pleasant 21.9°C (71.4°F), displaying a near consistency with the previous month. During the nights in September, Viamão observes an average low-temperature of 13.5°C (56.3°F).Humidity
The months with the highest humidity in Viamão are May through July and September, with an average relative humidity of 80%.Rainfall
In Viamão, in September, during 14.2 rainfall days, 70mm (2.76") of precipitation is typically accumulated. Throughout the year, there are 163.2 rainfall days, and 918mm (36.14") of precipitation is accumulated.Daylight
In September, the average length of the day is 11h and 56min.On the first day of September, sunrise is at 06:38 and sunset at 18:09. On the last day of the month, sunrise is at 06:02 and sunset at 18:25 -03.
Sunshine
The month with the least sunshine is September, with an average of 7.1h of sunshine.UV index
The average daily maximum UV index in September in Viamão, Brazil, is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Guard yourself - Avoiding sunburn is suggested. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Viamão, Brazil
- Average high temperature in September: 21.9°C
The warmest month (with the highest average high temperature) is February (30.3°C).
The month with the lowest average high temperature is July (18.6°C).
- Average low temperature in September: 13.5°C
The month with the highest average low temperature is February (20.5°C).
The coldest month (with the lowest average low temperature) is July (11.1°C).
Average pressure in September
Viamão, Brazil
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is July (1019.8mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).
Average wind speed in September
Viamão, Brazil
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is October (13.3km/h).
The calmest month (with the lowest average wind speed) is May (11.1km/h).
Average humidity in September
Viamão, Brazil
- Average humidity in September: 80%
The months with the highest relative humidity are May, June, July and September (80%).
The month with the lowest relative humidity is December (72%).
Average rainfall in September
Viamão, Brazil
- Average rainfall in September: 70mm
The wettest month (with the highest rainfall) is July (103mm).
The driest month (with the least rainfall) is April (54mm).
Average rainfall days in September
Viamão, Brazil
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is January (17.3 days).
The month with the least rainy days is June (11.1 days).
Average daylight in September /
Average sunshine in September
Viamão, 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 6min
The months with the most sunshine are January, November and December (Average sunshine: 8h and 18min).
The month with the least sunshine is September (Average sunshine: 7h and 6min).
Average sunshine days in September
Viamão, Brazil
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is July (18.1 days).
The month with the least sunshine days is February (11.2 days).
Average UV index in September
Viamão, 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 and June (UV index 4).
Average cloud cover in September
Viamão, 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
Viamão, Brazil
- Average visibility in September: 9km
The month with the highest visibility is February (10km).
The months with the lowest visibility are January, March, April, May, June, July, August, September, October, November and December (9km).
