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
September, with average temperatures reaching a high of 30.4°C (86.7°F) and a low of 17.8°C (64°F), is the warmest month.Heat index
In September, the average heat index is computed to be a hot 32°C (89.6°F). With extended exposure and activity, one might feel exhausted and experience heat cramps.Heat index data is primarily for areas with shade and subjected to light winds. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Humidity
September is the least humid month, with an average relative humidity of 54%.Rainfall
In Altinópolis, in September, during 9.5 rainfall days, 43mm (1.69") of precipitation is typically accumulated. In Altinópolis, during the entire year, the rain falls for 231.2 days and collects up to 1433mm (56.42") of precipitation.Daylight
In Altinópolis, Brazil, the average length of the day in September is 11h and 59min.On the first day of September, sunrise is at 06:17 and sunset at 18:00. On the last day of the month, sunrise is at 05:50 and sunset at 18:07 -03.
Sunshine
September has the most sunshine of the year, with an average of 9.4h of sunshine.UV index
January, July through October, with an average maximum UV index of 6, are months with the highest UV index in Altinópolis. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 6 in September transforms into the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the hottest in Altinópolis?
Is it hot in Altinópolis during September?
What is the least humid month in Altinópolis?
What is the average humidity in September in Altinópolis?
How many days does it rain in September in Altinópolis?
How many hours of daylight does Altinópolis have in September?
When are sunrise and sunset in September in Altinópolis?
What month has the most sunshine in Altinópolis?
How many hours of sunshine does Altinópolis have in September?
What is the month with the highest UV index in Altinópolis?
What is the UV index reading in September in Altinópolis?
Average temperature in September
Altinópolis, Brazil
- Average high temperature in September: 30.4°C
The warmest month (with the highest average high temperature) is September (30.4°C).
The month with the lowest average high temperature is June (23.7°C).
- Average low temperature in September: 17.8°C
The month with the highest average low temperature is December (19.3°C).
The coldest month (with the lowest average low temperature) is June (14.1°C).
Average pressure in September
Altinópolis, Brazil
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is July (1019.4mbar).
The months with the lowest atmospheric pressure are November and December (1011.5mbar).
Average wind speed in September
Altinópolis, Brazil
- Average wind speed in September: 9.5km/h
The windiest month (with the highest average wind speed) is August (9.6km/h).
The calmest month (with the lowest average wind speed) is February (6.6km/h).
Average humidity in September
Altinópolis, Brazil
- Average humidity in September: 54%
The month with the highest relative humidity is March (89%).
The month with the lowest relative humidity is September (54%).
Average rainfall in September
Altinópolis, Brazil
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is January (259mm).
The driest month (with the least rainfall) is August (10mm).
Average rainfall days in September
Altinópolis, Brazil
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is January (29.8 days).
The month with the least rainy days is August (4.2 days).
Average daylight in September /
Average sunshine in September
Altinópolis, 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 54min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is September (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 6h and 54min).
Average sunshine days in September
Altinópolis, Brazil
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is August (26.3 days).
The months with the least sunshine days are January and March (0.8 days).
Average UV index in September
Altinópolis, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, July, August, September and October (UV index 6).
The months with the lowest UV index are February, March, April, May, June, November and December (UV index 5).
Average cloud cover in September
Altinópolis, Brazil
- Average cloud cover in September: 19
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in September
Altinópolis, Brazil
- Average visibility in September: 10km
The months with the highest visibility are August and September (10km).
The months with the lowest visibility are January, February, March, April, May and December (7km).
