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
A minimal variation is noted in Doutor Severiano's average high-temperature at the onset of September, reaching a sweltering 35.1°C (95.2°F) from August's 33.7°C (92.7°F). Doutor Severiano, after hot September days, encounters a marked drop to an average nighttime temperature of 22.3°C (72.1°F).Heat index
September's mean heat index is appraised at a very hot 39°C (102.2°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.Data suggests that the heat index is set for environments in shade and with a light wind. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. 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
With an average relative humidity of 46%, September is the least humid month.Rainfall
September is the month with the least rainfall. Rain falls for 3.9 days and accumulates 3mm (0.12") of precipitation.Daylight
In September, the average length of the day is 12h and 5min.On the first day of September, sunrise is at 05:33 and sunset at 17:33. On the last day of the month, sunrise is at 05:18 and sunset at 17:28 -03.
Sunshine
August and September, with an average of 9.7h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index are January, March, April, July through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 7 during September leads to these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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?
How much does it rain in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
What are the months with the most sunshine?
How long on average sun shines in September?
What are the months with the highest UV index?
What is the UV index reading in September?
Average temperature in September
Doutor Severiano, Brazil
- Average high temperature in September: 35.1°C
The warmest month (with the highest average high temperature) is October (35.7°C).
The month with the lowest average high temperature is June (30.9°C).
- Average low temperature in September: 22.3°C
The month with the highest average low temperature is November (24.5°C).
The coldest month (with the lowest average low temperature) is July (19.8°C).
Average pressure in September
Doutor Severiano, Brazil
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is July (1015.1mbar).
The month with the lowest atmospheric pressure is November (1010.3mbar).
Average wind speed in September
Doutor Severiano, Brazil
- Average wind speed in September: 14.3km/h
The windiest month (with the highest average wind speed) is November (14.6km/h).
The calmest month (with the lowest average wind speed) is April (8.3km/h).
Average humidity in September
Doutor Severiano, Brazil
- Average humidity in September: 46%
The month with the highest relative humidity is April (76%).
The month with the lowest relative humidity is September (46%).
Average rainfall in September
Doutor Severiano, Brazil
- Average rainfall in September: 3mm
The wettest month (with the highest rainfall) is March (166mm).
The driest month (with the least rainfall) is September (3mm).
Average rainfall days in September
Doutor Severiano, Brazil
- Average rainfall days in September: 3.9 days
The month with the highest number of rainy days is March (26.8 days).
The month with the least rainy days is September (3.9 days).
Average daylight in September /
Average sunshine in September
Doutor Severiano, 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 months with the most sunshine are August and September (Average sunshine: 9h and 42min).
The month with the least sunshine is March (Average sunshine: 7h and 24min).
Average sunshine days in September
Doutor Severiano, Brazil
- Average sunshine days in September: 25.1 days
The month with the most sunshine days is September (25.1 days).
The month with the least sunshine days is March (3.2 days).
Average UV index in September
Doutor Severiano, Brazil
- Average UV index in September: 7
The months with the highest UV index are January, March, April, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are February, May and June (UV index 6).
Average cloud cover in September
Doutor Severiano, Brazil
- Average cloud cover in September: 19
The months with the most cloud cover are March and April (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 19).
Average visibility in September
Doutor Severiano, Brazil
- Average visibility in September: 10km
The months with the highest visibility are January, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are February, March, April and May (9km).
