September weather forecastPetrópolis, Brazil
September
Weather in September
September, the first month of the spring in Petrópolis, is also a moderately hot month, with an average temperature ranging between min 17.3°C (63.1°F) and max 25.5°C (77.9°F).Temperature
September observes an average high-temperature of a still warm 25.5°C (77.9°F), marking an insignificant difference from August's 24.3°C (75.7°F). During September, the average low-temperature is a comfortable 17.3°C (63.1°F).Humidity
In September, the average relative humidity in Petrópolis is 79%.Rainfall
In Petrópolis, Brazil, during September, the rain falls for 14.3 days and regularly aggregates up to 46mm (1.81") of precipitation. In Petrópolis, during the entire year, the rain falls for 228.9 days and collects up to 1079mm (42.48") of precipitation.Daylight
In Petrópolis, the average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 06:02 and sunset at 17:42. On the last day of September, sunrise is at 05:33 and sunset at 17:51 -03.
Sunshine
In Petrópolis, the average sunshine in September is 7.9h.UV index
April through July and September, with an average maximum UV index of 5, are months with the lowest UV index in Petrópolis. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Petrópolis, Brazil
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is January (29.2°C).
The month with the lowest average high temperature is June (23.4°C).
- Average low temperature in September: 17.3°C
The month with the highest average low temperature is January (21.3°C).
The coldest month (with the lowest average low temperature) is June (16°C).
Average pressure in September
Petrópolis, Brazil
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is July (1020.6mbar).
The month with the lowest atmospheric pressure is December (1012mbar).
Average wind speed in September
Petrópolis, Brazil
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is September (8.1km/h).
The calmest month (with the lowest average wind speed) is March (6.2km/h).
Average humidity in September
Petrópolis, Brazil
- Average humidity in September: 79%
The months with the highest relative humidity are March, April and November (85%).
The month with the lowest relative humidity is August (78%).
Average rainfall in September
Petrópolis, Brazil
- Average rainfall in September: 46mm
The wettest months (with the highest rainfall) are January and November (155mm).
The driest month (with the least rainfall) is July (31mm).
Average rainfall days in September
Petrópolis, Brazil
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is December (26.8 days).
The month with the least rainy days is August (11.3 days).
Average daylight in September /
Average sunshine in September
Petrópolis, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is February (Average sunshine: 8h and 24min).
The months with the least sunshine are October and November (Average sunshine: 7h and 18min).
Average sunshine days in September
Petrópolis, Brazil
- Average sunshine days in September: 13 days
The month with the most sunshine days is August (17.2 days).
The month with the least sunshine days is December (2.2 days).
Average UV index in September
Petrópolis, Brazil
- Average UV index in September: 5
The months with the highest UV index are January, February, March, August, October, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July and September (UV index 5).
Average cloud cover in September
Petrópolis, Brazil
- Average cloud cover in September: 35
The month with the most cloud cover is November (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Petrópolis, Brazil
- Average visibility in September: 9km
The months with the highest visibility are January, February, May, June, July, August, September and October (9km).
The months with the lowest visibility are March, April, November and December (8km).
