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 month of September sees the highest average temperatures, reaching 33.7°C (92.7°F) at the peak and 22.2°C (72°F) at the low.Heat index
Throughout September, the heat index is appraised at a blazing hot 48°C (118.4°F). Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
August and September, with an average relative humidity of 75%, are the least humid months.Rainfall
In Atalaia do Norte, in September, during 19.5 rainfall days, 61mm (2.4") of precipitation is typically accumulated. Throughout the year, there are 306.6 rainfall days, and 1736mm (68.35") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 5min.On the first day of the month, sunrise is at 06:39 and sunset at 18:41. On the last day of September, in Atalaia do Norte, sunrise is at 06:26 and sunset at 18:34 -04.
Sunshine
The average sunshine in September is 8.5h.UV index
July through October, with an average maximum UV index of 7, are months with the highest UV index in Atalaia do Norte. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year in Atalaia do Norte?
How hot does it get in Atalaia do Norte in September?
What are the least humid months in Atalaia do Norte?
What is the average humidity in September in Atalaia do Norte?
How many days does it rain in September in Atalaia do Norte?
How many hours of daylight does Atalaia do Norte have in September?
What time are sunrise and sunset in September in Atalaia do Norte?
How long on average sun shines in September in Atalaia do Norte?
What are the months with the highest UV index in Atalaia do Norte?
How high is the UV index in September in Atalaia do Norte?
Average temperature in September
Atalaia do Norte, Brazil
- Average high temperature in September: 33.7°C
The warmest month (with the highest average high temperature) is September (33.7°C).
The month with the lowest average high temperature is January (29.9°C).
- Average low temperature in September: 22.2°C
The month with the highest average low temperature is November (22.8°C).
The coldest month (with the lowest average low temperature) is July (20.8°C).
Average pressure in September
Atalaia do Norte, Brazil
- Average pressure in September: 1010.5mbar
The month with the highest atmospheric pressure is July (1012.4mbar).
The month with the lowest atmospheric pressure is November (1008.1mbar).
Average wind speed in September
Atalaia do Norte, Brazil
- Average wind speed in September: 3.6km/h
The windiest months (with the highest average wind speed) are October and November (3.7km/h).
The calmest months (with the lowest average wind speed) are April and May (3.3km/h).
Average humidity in September
Atalaia do Norte, Brazil
- Average humidity in September: 75%
The months with the highest relative humidity are January, March and April (90%).
The months with the lowest relative humidity are August and September (75%).
Average rainfall in September
Atalaia do Norte, Brazil
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is December (251mm).
The driest month (with the least rainfall) is August (49mm).
Average rainfall days in September
Atalaia do Norte, Brazil
- Average rainfall days in September: 19.5 days
The month with the highest number of rainy days is March (30.1 days).
The month with the least rainy days is August (18.3 days).
Average daylight in September /
Average sunshine in September
Atalaia do Norte, 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 54min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 8h and 36min).
The month with the least sunshine is March (Average sunshine: 5h and 30min).
Average sunshine days in September
Atalaia do Norte, Brazil
- Average sunshine days in September: 8.8 days
The month with the most sunshine days is August (10.9 days).
The month with the least sunshine days is March (0.3 days).
Average UV index in September
Atalaia do Norte, Brazil
- Average UV index in September: 7
The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).
Average cloud cover in September
Atalaia do Norte, Brazil
- Average cloud cover in September: 42
The months with the most cloud cover are January, March and April (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in September
Atalaia do Norte, Brazil
- Average visibility in September: 8km
The months with the highest visibility are August and September (8km).
The months with the lowest visibility are January and April (5km).
