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 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
Weather in September
Temperature
With the advent of September, Portão's high-temperatures adjust to a still pleasant 21.5°C (70.7°F), closely aligning with the preceding month. Portão experiences a mean low-temperature of 12.3°C (54.1°F) during September.Humidity
In September, the average relative humidity in Portão is 82%.Rainfall
September is the month with the least rainfall. Rain falls for 8.9 days and accumulates 11mm (0.43") of precipitation.Daylight
The average length of the day in September in Portão is 11h and 56min.On the first day of the month, sunrise is at 06:39 and sunset at 18:10. On the last day of September, in Portão, sunrise is at 06:03 and sunset at 18:25 -03.
Sunshine
In September, the average sunshine is 7.4h.UV index
In Portão, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A daily maximum UV index of 5 in September translates into the following instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What are September temperatures in Portão?
What is the average humidity in September in Portão?
What is the driest month in Portão?
How many days does it rain in September in Portão?
How many hours of daylight does Portão have in September?
When are sunrise and sunset in September in Portão?
How long on average sun shines in September in Portão?
How high is the UV index in September in Portão?
Average temperature in September
Portão, Brazil
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is February (29.3°C).
The month with the lowest average high temperature is July (18.3°C).
- Average low temperature in September: 12.3°C
The month with the highest average low temperature is January (18.8°C).
The coldest month (with the lowest average low temperature) is July (9.8°C).
Average pressure in September
Portão, Brazil
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is July (1019.9mbar).
The month with the lowest atmospheric pressure is December (1011.5mbar).
Average wind speed in September
Portão, Brazil
- Average wind speed in September: 9.8km/h
The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is May (8.6km/h).
Average humidity in September
Portão, Brazil
- Average humidity in September: 82%
The months with the highest relative humidity are May, June and July (83%).
The month with the lowest relative humidity is December (75%).
Average rainfall in September
Portão, Brazil
- Average rainfall in September: 11mm
The wettest months (with the highest rainfall) are January and October (30mm).
The driest month (with the least rainfall) is September (11mm).
Average rainfall days in September
Portão, Brazil
- Average rainfall days in September: 8.9 days
The month with the highest number of rainy days is January (12.8 days).
The month with the least rainy days is June (7.7 days).
Average daylight in September /
Average sunshine in September
Portão, Brazil
- Average daylight in September: 11h and 5min
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 18min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is December (Average sunshine: 8h and 36min).
The month with the least sunshine is May (Average sunshine: 7h and 18min).
Average sunshine days in September
Portão, Brazil
- Average sunshine days in September: 18.8 days
The month with the most sunshine days is July (21.4 days).
The month with the least sunshine days is February (15.3 days).
Average UV index in September
Portão, 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
Portão, Brazil
- Average cloud cover in September: 38
The month with the most cloud cover is May (Cloud cover 39).
The month with the least cloud cover is November (Cloud cover 31).
Average visibility in September
Portão, Brazil
- Average visibility in September: 8km
The months with the highest visibility are February, April, June, July, August, November and December (9km).
The months with the lowest visibility are January, March, May, September and October (8km).
Portão, Brazil
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