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 transition into September shows a subtle variation to a still moderately hot 28.5°C (83.3°F) from August's 26°C (78.8°F) in the average high-temperature. In Chave do Barão, September nights witness a remarkable decline from the day's zenith to a refreshing 16.2°C (61.2°F).Heat index
For September, the heat index is appraised at a hot 31°C (87.8°F). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
Humidity
The months with the lowest humidity are August and September, with an average relative humidity of 65%.Rainfall
In Chave do Barão, during September, the rain falls for 10.6 days and regularly aggregates up to 51mm (2.01") of precipitation. Throughout the year, there are 208.3 rainfall days, and 1276mm (50.24") of precipitation is accumulated.Daylight
The average length of the day in September is 11h and 58min.On the first day of September, sunrise is at 06:20 and sunset at 18:00. On the last day of the month, sunrise is at 05:51 and sunset at 18:09 -03.
Sunshine
September has the most sunshine of the year, with an average of 9.1h of sunshine.UV index
February through July, September and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 5 during September translates into the following directions:
Take necessary precautions - Suggestions to elude sunburn are provided. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot during September?
What are the least humid months?
What is the average humidity in September?
How much does it rain in September?
How many hours of daylight does Chave do Barão have in September?
When is the sunrise / sunset in September?
What month has the most sunshine?
How many hours of sunshine does Chave do Barão have in September?
When is the lowest UV index?
How high is the UV index in September?
Average temperature in September
Chave do Barão, Brazil
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is October (29.4°C).
The month with the lowest average high temperature is June (22.8°C).
- Average low temperature in September: 16.2°C
The month with the highest average low temperature is January (19.9°C).
The coldest month (with the lowest average low temperature) is June (13.6°C).
Average pressure in September
Chave do Barão, Brazil
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is July (1020mbar).
The month with the lowest atmospheric pressure is December (1011.7mbar).
Average wind speed in September
Chave do Barão, Brazil
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is October (9.5km/h).
The calmest months (with the lowest average wind speed) are February and April (7km/h).
Average humidity in September
Chave do Barão, Brazil
- Average humidity in September: 65%
The month with the highest relative humidity is March (85%).
The months with the lowest relative humidity are August and September (65%).
Average rainfall in September
Chave do Barão, Brazil
- Average rainfall in September: 51mm
The wettest month (with the highest rainfall) is January (251mm).
The driest month (with the least rainfall) is August (25mm).
Average rainfall days in September
Chave do Barão, Brazil
- Average rainfall days in September: 10.6 days
The month with the highest number of rainy days is January (28.3 days).
The month with the least rainy days is August (5.5 days).
Average daylight in September /
Average sunshine in September
Chave do Barão, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is September (Average sunshine: 9h and 6min).
The month with the least sunshine is January (Average sunshine: 7h and 30min).
Average sunshine days in September
Chave do Barão, Brazil
- Average sunshine days in September: 18.3 days
The month with the most sunshine days is August (24.3 days).
The month with the least sunshine days is February (1.6 days).
Average UV index in September
Chave do Barão, Brazil
- Average UV index in September: 5
The months with the highest UV index are January, August, October and November (UV index 6).
The months with the lowest UV index are February, March, April, May, June, July, September and December (UV index 5).
Average cloud cover in September
Chave do Barão, Brazil
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in September
Chave do Barão, Brazil
- Average visibility in September: 9km
The months with the highest visibility are July, August, September, October, November and December (9km).
The month with the lowest visibility is May (7km).
