September weather forecastOsasco, Brazil
September
Weather in September
September brings a seasonal change to Osasco with a slight rise in temperatures hinting at the upcoming spring. The 24.7°C (76.5°F) high contrasts with the sunshine days decreasing from the monthly high of 18.3 days in August to 12.7 days. Though the rainfall begins to increase, reaching 49mm (1.93"), it is spread over fewer days, resulting in more predictable weather patterns. As the month progresses, the weather gradually becomes more humid, forecasting a looming shift in the season.Temperature
The arrival of September in Osasco records an average high-temperature of a warm 24.7°C (76.5°F), closely related to the 22.9°C (73.2°F) observed in August. In the month of September, the average temperature dips to a mild 14.8°C (58.6°F) during the night.Humidity
The average relative humidity in September in Osasco is 75%.Rainfall
In Osasco, Brazil, in September, during 14.2 rainfall days, 49mm (1.93") of precipitation is typically accumulated. In Osasco, during the entire year, the rain falls for 206.4 days and collects up to 932mm (36.69") of precipitation.Daylight
In September, the average length of the day in Osasco is 11h and 58min.On the first day of September, sunrise is at 06:17 and sunset at 17:56. On the last day of the month, sunrise is at 05:47 and sunset at 18:06 -03.
Sunshine
With an average of 8h of sunshine, September has the most sunshine of the year.UV index
The months with the lowest UV index are February through December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, an average UV index of 5 transforms into the following instructions:
Be vigilant - Preventing sunburn is recommended. To avoid the Sun's strongest rays, limit exposure around the mid-day period. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Osasco, Brazil
- Average high temperature in September: 24.7°C
The warmest month (with the highest average high temperature) is February (26.7°C).
The month with the lowest average high temperature is June (20.8°C).
- Average low temperature in September: 14.8°C
The month with the highest average low temperature is January (18.7°C).
The coldest month (with the lowest average low temperature) is July (12.6°C).
Average pressure in September
Osasco, Brazil
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is July (1020.2mbar).
The month with the lowest atmospheric pressure is December (1011.8mbar).
Average wind speed in September
Osasco, Brazil
- Average wind speed in September: 10.4km/h
The windiest month (with the highest average wind speed) is November (11km/h).
The calmest month (with the lowest average wind speed) is February (8.5km/h).
Average humidity in September
Osasco, Brazil
- Average humidity in September: 75%
The months with the highest relative humidity are March, April and May (85%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Osasco, Brazil
- Average rainfall in September: 49mm
The wettest month (with the highest rainfall) is January (181mm).
The driest month (with the least rainfall) is August (36mm).
Average rainfall days in September
Osasco, Brazil
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is January (25.6 days).
The month with the least rainy days is August (9.3 days).
Average daylight in September /
Average sunshine in September
Osasco, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 36min).
The month with the shortest days is June (Average daylight: 10h and 42min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is September (Average sunshine: 8h and 0min).
The months with the least sunshine are January, November and December (Average sunshine: 6h and 54min).
Average sunshine days in September
Osasco, Brazil
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is August (18.3 days).
The month with the least sunshine days is January (4.3 days).
Average UV index in September
Osasco, Brazil
- Average UV index in September: 5
The month with the highest UV index is January (UV index 6).
The months with the lowest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Average cloud cover in September
Osasco, Brazil
- Average cloud cover in September: 42
The months with the most cloud cover are January and November (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Osasco, Brazil
- Average visibility in September: 8km
The month with the highest visibility is August (9km).
The months with the lowest visibility are January, February, March, April and May (7km).
