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 onset of September manifests an average high-temperature of a still moderately hot 25.6°C (78.1°F), demonstrating a minor variation from the preceding month. The low-temperature averages to a comfortable 19.2°C (66.6°F) during the nights of September.Humidity
In Jacarepaguá, the average relative humidity in September is 78%.Rainfall
In Jacarepaguá, in September, it is raining for 13.4 days, with typically 28mm (1.1") of accumulated precipitation. Throughout the year, in Jacarepaguá, there are 172 rainfall days, and 543mm (21.38") of precipitation is accumulated.Daylight
The average length of the day in September is 11h and 58min.On the first day of September in Jacarepaguá, sunrise is at 06:03 and sunset at 17:43. On the last day of the month, sunrise is at 05:34 and sunset at 17:52 -03.
Sunshine
The average sunshine in September in Jacarepaguá is 7.5h.UV index
February through November, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 6 in September translates into these instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Jacarepaguá in September?
What is the average humidity in September in Jacarepaguá?
How many days does it rain in September in Jacarepaguá?
What is the average length of the day in September in Jacarepaguá?
When is the sunrise / sunset in September in Jacarepaguá?
How many hours of sunshine does Jacarepaguá have in September?
What are the months with the lowest UV index in Jacarepaguá?
How high is the UV index in September in Jacarepaguá?
Average temperature in September
Jacarepaguá, Brazil
- Average high temperature in September: 25.6°C
The warmest month (with the highest average high temperature) is February (30.6°C).
The month with the lowest average high temperature is July (24.5°C).
- Average low temperature in September: 19.2°C
The month with the highest average low temperature is January (23.3°C).
The coldest month (with the lowest average low temperature) is August (18°C).
Average pressure in September
Jacarepaguá, Brazil
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is July (1020.4mbar).
The month with the lowest atmospheric pressure is December (1011.9mbar).
Average wind speed in September
Jacarepaguá, Brazil
- Average wind speed in September: 10.2km/h
The windiest months (with the highest average wind speed) are August and September (10.2km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).
Average humidity in September
Jacarepaguá, 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 (77%).
Average rainfall in September
Jacarepaguá, Brazil
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is February (75mm).
The driest months (with the least rainfall) are June and August (23mm).
Average rainfall days in September
Jacarepaguá, Brazil
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (9.4 days).
Average daylight in September /
Average sunshine in September
Jacarepaguá, 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 3min
The month with the most sunshine is February (Average sunshine: 8h and 36min).
The months with the least sunshine are October and November (Average sunshine: 7h and 12min).
Average sunshine days in September
Jacarepaguá, Brazil
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is August (19.2 days).
The month with the least sunshine days is March (8.2 days).
Average UV index in September
Jacarepaguá, Brazil
- Average UV index in September: 6
The months with the highest UV index are January and December (UV index 7).
The months with the lowest UV index are February, March, April, May, June, July, August, September, October and November (UV index 6).
Average cloud cover in September
Jacarepaguá, Brazil
- Average cloud cover in September: 38
The month with the most cloud cover is November (Cloud cover 49).
The month with the least cloud cover is February (Cloud cover 31).
Average visibility in September
Jacarepaguá, Brazil
- Average visibility in September: 9km
The months with the highest visibility are February, May, June and August (10km).
The months with the lowest visibility are January, March, April, July, September, October, November and December (9km).
