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
As August turns into September, the average high-temperatures rest at a still moderately hot 28.1°C (82.6°F), showing a minor variation from the prior month. João Alfredo's nighttime temperature in September falls to an average of 19.5°C (67.1°F).Heat index
September's mean heat index is computed to be a hot 33°C (91.4°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.Note that heat index values are valued for light wind and location in the shade. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The average relative humidity in September in João Alfredo is 81%.Rainfall
In João Alfredo, in September, it is raining for 18.3 days, with typically 16mm (0.63") of accumulated precipitation. In João Alfredo, during the entire year, the rain falls for 224.2 days and collects up to 433mm (17.05") of precipitation.Daylight
In September, the average length of the day in João Alfredo is 12h and 4min.On the first day of the month, sunrise is at 05:23 and sunset at 17:21. On the last day of September, sunrise is at 05:06 and sunset at 17:17 -03.
Sunshine
In João Alfredo, the average sunshine in September is 6.8h.UV index
In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. 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. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in João Alfredo during September?
What is the average humidity in September in João Alfredo?
How many days does it rain in September in João Alfredo?
What is the average length of the day in September in João Alfredo?
What time are sunrise and sunset in September in João Alfredo?
How many hours of sunshine does João Alfredo have in September?
What is the UV index intensity in September in João Alfredo?
Average temperature in September
João Alfredo, Brazil
- Average high temperature in September: 28.1°C
The warmest month (with the highest average high temperature) is March (31.3°C).
The month with the lowest average high temperature is July (26.7°C).
- Average low temperature in September: 19.5°C
The month with the highest average low temperature is March (22.5°C).
The coldest month (with the lowest average low temperature) is August (18.9°C).
Average pressure in September
João Alfredo, Brazil
- Average pressure in September: 1015.8mbar
The month with the highest atmospheric pressure is August (1016.5mbar).
The months with the lowest atmospheric pressure are February and March (1012.1mbar).
Average wind speed in September
João Alfredo, Brazil
- Average wind speed in September: 11.9km/h
The windiest months (with the highest average wind speed) are August and September (11.9km/h).
The calmest month (with the lowest average wind speed) is April (8.7km/h).
Average humidity in September
João Alfredo, Brazil
- Average humidity in September: 81%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is December (73%).
Average rainfall in September
João Alfredo, Brazil
- Average rainfall in September: 16mm
The wettest month (with the highest rainfall) is April (68mm).
The driest month (with the least rainfall) is November (12mm).
Average rainfall days in September
João Alfredo, Brazil
- Average rainfall days in September: 18.3 days
The months with the highest number of rainy days are July and August (21.7 days).
The month with the least rainy days is November (14.6 days).
Average daylight in September /
Average sunshine in September
João Alfredo, Brazil
- Average daylight in September: 12h and 1min
The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is March (Average sunshine: 7h and 6min).
The month with the least sunshine is July (Average sunshine: 5h and 30min).
Average sunshine days in September
João Alfredo, Brazil
- Average sunshine days in September: 6.8 days
The month with the most sunshine days is December (10.1 days).
The month with the least sunshine days is August (4.7 days).
Average UV index in September
João Alfredo, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February and March (UV index 7).
The month with the lowest UV index is July (UV index 5).
Average cloud cover in September
João Alfredo, Brazil
- Average cloud cover in September: 53
The month with the most cloud cover is July (Cloud cover 63).
The month with the least cloud cover is November (Cloud cover 48).
Average visibility in September
João Alfredo, Brazil
- Average visibility in September: 8km
The month with the highest visibility is December (10km).
The months with the lowest visibility are May and June (6km).
