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
August's transformation into September witnesses an average high-temperature of a still moderately hot 27.5°C (81.5°F), noting a minor change from the preceding month. Despite soaring daytime temperatures, Alfenas registers a consistent average low-temperature of 14.4°C (57.9°F) in September.Heat index
September's heat index is evaluated at 29°C (84.2°F). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humidity
With an average relative humidity of 66%, September is the least humid month.Rainfall
In Alfenas, during September, the rain falls for 9.6 days and regularly aggregates up to 45mm (1.77") of precipitation. Throughout the year, in Alfenas, there are 213.8 rainfall days, and 1252mm (49.29") of precipitation is accumulated.Daylight
In September, the average length of the day is 11h and 59min.On the first day of September in Alfenas, sunrise is at 06:12 and sunset at 17:54. On the last day of the month, sunrise is at 05:44 and sunset at 18:02 -03.
Sunshine
August and September, with an average of 9.1h of sunshine, are months with the most sunshine in Alfenas.UV index
The months with the lowest UV index are January through July, September through December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 translates into these guidelines:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Alfenas in September?
What is the least humid month in Alfenas?
What is the average humidity in September in Alfenas?
How much does it rain in Alfenas in September?
What is the average length of the day in September in Alfenas?
When are sunrise and sunset in September in Alfenas?
What are the months with the most sunshine in Alfenas?
How long on average sun shines in September in Alfenas?
What is the month with the lowest UV index in Alfenas?
What is the UV index intensity in September in Alfenas?
Average temperature in September
Alfenas, Brazil
- Average high temperature in September: 27.5°C
The warmest month (with the highest average high temperature) is October (27.6°C).
The month with the lowest average high temperature is June (21.8°C).
- Average low temperature in September: 14.4°C
The month with the highest average low temperature is December (17.9°C).
The coldest month (with the lowest average low temperature) is July (11.3°C).
Average pressure in September
Alfenas, Brazil
- Average pressure in September: 1017.2mbar
The month with the highest atmospheric pressure is July (1020.6mbar).
The month with the lowest atmospheric pressure is December (1012.7mbar).
Average wind speed in September
Alfenas, Brazil
- Average wind speed in September: 7.7km/h
The windiest months (with the highest average wind speed) are September and October (7.7km/h).
The calmest month (with the lowest average wind speed) is April (5.9km/h).
Average humidity in September
Alfenas, Brazil
- Average humidity in September: 66%
The months with the highest relative humidity are January, March and April (89%).
The month with the lowest relative humidity is September (66%).
Average rainfall in September
Alfenas, Brazil
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is January (240mm).
The driest month (with the least rainfall) is July (13mm).
Average rainfall days in September
Alfenas, Brazil
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is December (28.9 days).
The month with the least rainy days is August (5.2 days).
Average daylight in September /
Average sunshine in September
Alfenas, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are August and September (Average sunshine: 9h and 6min).
The months with the least sunshine are January and December (Average sunshine: 6h and 48min).
Average sunshine days in September
Alfenas, Brazil
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is August (24.1 days).
The month with the least sunshine days is December (1.1 days).
Average UV index in September
Alfenas, Brazil
- Average UV index in September: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, September, October, November and December (UV index 5).
Average cloud cover in September
Alfenas, Brazil
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 22).
Average visibility in September
Alfenas, Brazil
- Average visibility in September: 9km
The months with the highest visibility are August and September (9km).
The months with the lowest visibility are January, March, April and May (6km).
