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
September, with an average high of 36.6°C (97.9°F) and a low of 23.5°C (74.3°F), signifies the warmest month of the year.Heat index
The heat index for September is evaluated at a blistering 43°C (109.4°F). Attention: Heat exhaustion and heat cramps are anticipated. Prolonged effort can result in heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
September is the least humid month, with an average relative humidity of 46%.Rainfall
The month with the least rainfall is September, when the rain falls for 7.1 days and typically collects 10mm (0.39") of precipitation.Daylight
In September, the average length of the day in Barro Duro is 12h and 5min.On the first day of September, sunrise is at 05:49 and sunset at 17:50. On the last day of the month, sunrise is at 05:35 and sunset at 17:44 -03.
Sunshine
With an average of 9.6h of sunshine, September has the most sunshine of the year.UV index
The month with the highest UV index is September, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 8 during September translates into the following guidance:
Never be careless. Unprotected skin and eyes can be harmed swiftly. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the hottest?
How hot does it get in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month in Barro Duro?
How many days does it rain in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
What month has the most sunshine?
How many hours of sunshine does Barro Duro have in September?
When is the highest UV index?
What is the UV index reading in September?
Average temperature in September
Barro Duro, Brazil
- Average high temperature in September: 36.6°C
The warmest month (with the highest average high temperature) is September (36.6°C).
The month with the lowest average high temperature is April (31.4°C).
- Average low temperature in September: 23.5°C
The months with the highest average low temperature are October and November (24.5°C).
The coldest months (with the lowest average low temperature) are June, July and August (22.3°C).
Average pressure in September
Barro Duro, Brazil
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is July (1013.3mbar).
The month with the lowest atmospheric pressure is November (1008.8mbar).
Average wind speed in September
Barro Duro, Brazil
- Average wind speed in September: 11.1km/h
The windiest month (with the highest average wind speed) is September (11.1km/h).
The calmest month (with the lowest average wind speed) is April (7.5km/h).
Average humidity in September
Barro Duro, Brazil
- Average humidity in September: 46%
The months with the highest relative humidity are March and April (81%).
The month with the lowest relative humidity is September (46%).
Average rainfall in September
Barro Duro, Brazil
- Average rainfall in September: 10mm
The wettest month (with the highest rainfall) is March (315mm).
The driest month (with the least rainfall) is September (10mm).
Average rainfall days in September
Barro Duro, Brazil
- Average rainfall days in September: 7.1 days
The month with the highest number of rainy days is March (29.3 days).
The month with the least rainy days is August (6.6 days).
Average daylight in September /
Average sunshine in September
Barro Duro, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is September (Average sunshine: 9h and 36min).
The month with the least sunshine is April (Average sunshine: 6h and 30min).
Average sunshine days in September
Barro Duro, Brazil
- Average sunshine days in September: 21 days
The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is March (1.2 days).
Average UV index in September
Barro Duro, Brazil
- Average UV index in September: 8
The month with the highest UV index is September (UV index 8).
The month with the lowest UV index is February (UV index 6).
Average cloud cover in September
Barro Duro, Brazil
- Average cloud cover in September: 25
The month with the most cloud cover is March (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in September
Barro Duro, Brazil
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September, October, November and December (10km).
The months with the lowest visibility are February, March and April (8km).
