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
At the onset of September, Caatinga do Atanásio records an average high-temperature of a fiery hot 35.6°C (96.1°F), showing little deviation from the preceding month. September witnesses a substantial contrast between the daytime highs and the average low of 22.5°C (72.5°F).Heat index
Throughout September, the heat index is estimated at a blistering 44°C (111.2°F). Careful: Heat exhaustion and heat cramps are anticipated. With ongoing exertion, heatstroke becomes a possibility.The metrics for the heat index are tailored for both shady environments and light winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
With an average relative humidity of 55%, September is the least humid month.Rainfall
The months with the least rainfall are September and October Rain falls for 1.9 days and accumulates 1mm (0.04") of rain.Daylight
The average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 05:32 and sunset at 17:32. On the last day of September, sunrise is at 05:17 and sunset at 17:27 -03.
Sunshine
September has the most sunshine of the year, with an average of 9.7h of sunshine.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum UV index of 7 in September translates into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September in Caatinga do Atanásio?
What month has the most sunshine in Caatinga do Atanásio?
How many hours of sunshine does Caatinga do Atanásio have in September?
When is the highest UV index in Caatinga do Atanásio?
What is the month with the lowest UV index?
What is the UV index intensity in September?
Average temperature in September
Caatinga do Atanásio, Brazil
- Average high temperature in September: 35.6°C
The warmest month (with the highest average high temperature) is October (36°C).
The month with the lowest average high temperature is June (32°C).
- Average low temperature in September: 22.5°C
The month with the highest average low temperature is December (24.5°C).
The coldest months (with the lowest average low temperature) are July and August (21.6°C).
Average pressure in September
Caatinga do Atanásio, Brazil
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is July (1014.3mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in September
Caatinga do Atanásio, Brazil
- Average wind speed in September: 18.1km/h
The windiest month (with the highest average wind speed) is October (18.7km/h).
The calmest month (with the lowest average wind speed) is April (11.3km/h).
Average humidity in September
Caatinga do Atanásio, Brazil
- Average humidity in September: 55%
The month with the highest relative humidity is April (76%).
The month with the lowest relative humidity is September (55%).
Average rainfall in September
Caatinga do Atanásio, Brazil
- Average rainfall in September: 1mm
The wettest month (with the highest rainfall) is March (83mm).
The driest months (with the least rainfall) are September and October (1mm).
Average rainfall days in September
Caatinga do Atanásio, Brazil
- Average rainfall days in September: 1.9 days
The month with the highest number of rainy days is March (20.2 days).
The month with the least rainy days is September (1.9 days).
Average daylight in September /
Average sunshine in September
Caatinga do Atanásio, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 24min).
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 42min).
The month with the least sunshine is March (Average sunshine: 7h and 48min).
Average sunshine days in September
Caatinga do Atanásio, Brazil
- Average sunshine days in September: 27.7 days
The months with the most sunshine days are September and October (27.7 days).
The month with the least sunshine days is March (8.5 days).
Average UV index in September
Caatinga do Atanásio, Brazil
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Caatinga do Atanásio, Brazil
- Average cloud cover in September: 16
The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is September (Cloud cover 16).
Average visibility in September
Caatinga do Atanásio, Brazil
- Average visibility in September: 10km
The months with the highest visibility are January, February, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are March, April and May (9km).
