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
September
Weather in September
Temperature
The weather during September records an average high-temperature of a still warm 25°C (77°F), closely mirroring the preceding month. During the nights in September, Flamengo experiences a consistent average temperature of 19.4°C (66.9°F).Humidity
The average relative humidity in September in Flamengo is 78%.Rainfall
In Flamengo, in September, it is raining for 13.7 days, with typically 47mm (1.85") of accumulated precipitation. In Flamengo, during the entire year, the rain falls for 192.5 days and collects up to 812mm (31.97") of precipitation.Daylight
In September, the average length of the day is 11h and 58min.On the first day of September, sunrise is at 06:02 and sunset at 17:42. On the last day of the month, sunrise is at 05:33 and sunset at 17:51 -03.
Sunshine
In September, the average sunshine is 7.9h.UV index
September is the month with the lowest UV index in Flamengo, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 in September converts into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Flamengo in September?
What is the average humidity in September in Flamengo?
How many days does it rain in September in Flamengo?
What is the average length of the day in September in Flamengo?
What time are sunrise and sunset in September in Flamengo?
How many hours of sunshine does Flamengo have in September?
What is the month with the lowest UV index in Flamengo?
What is the UV index reading in September in Flamengo?
Average temperature in September
Flamengo, Brazil
- Average high temperature in September: 25°C
The warmest month (with the highest average high temperature) is February (29.7°C).
The month with the lowest average high temperature is July (24°C).
- Average low temperature in September: 19.4°C
The month with the highest average low temperature is January (23.7°C).
The coldest month (with the lowest average low temperature) is August (18.5°C).
Average pressure in September
Flamengo, Brazil
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1011.9mbar).
Average wind speed in September
Flamengo, Brazil
- Average wind speed in September: 11.3km/h
The windiest months (with the highest average wind speed) are August and September (11.3km/h).
The calmest month (with the lowest average wind speed) is March (8.7km/h).
Average humidity in September
Flamengo, Brazil
- Average humidity in September: 78%
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Flamengo, Brazil
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is November (119mm).
The driest month (with the least rainfall) is June (29mm).
Average rainfall days in September
Flamengo, Brazil
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is March (22.7 days).
The month with the least rainy days is July (9.3 days).
Average daylight in September /
Average sunshine in September
Flamengo, 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 42min).
- Average sunshine in September: 7h and 5min
The month with the most sunshine is February (Average sunshine: 8h and 48min).
The month with the least sunshine is October (Average sunshine: 7h and 30min).
Average sunshine days in September
Flamengo, Brazil
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is July (20.6 days).
The month with the least sunshine days is December (4.8 days).
Average UV index in September
Flamengo, Brazil
- Average UV index in September: 5
The month with the highest UV index is January (UV index 7).
The month with the lowest UV index is September (UV index 5).
Average cloud cover in September
Flamengo, Brazil
- Average cloud cover in September: 34
The month with the most cloud cover is November (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 28).
Average visibility in September
Flamengo, Brazil
- Average visibility in September: 10km
The months with the highest visibility are February, May, June, July, August and September (10km).
The months with the lowest visibility are January, March, April, October, November and December (9km).
