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 commencement of September notes an average high-temperature of a still moderately hot 28.2°C (82.8°F), exhibiting little difference from the previous month. The average temperature during September nights is registered at a pleasant 21.3°C (70.3°F).Heat index
For September, the heat index is appraised at a hot 32°C (89.6°F). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. 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 of high significance for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Humidity
The average relative humidity in September is 78%.Rainfall
In Mata Redonda, in September, it is raining for 18.7 days, with typically 22mm (0.87") of accumulated precipitation. Throughout the year, there are 235.6 rainfall days, and 501mm (19.72") of precipitation is accumulated.Daylight
In Mata Redonda, the average length of the day in September is 12h and 4min.On the first day of September in Mata Redonda, sunrise is at 05:20 and sunset at 17:18. On the last day of the month, sunrise is at 05:04 and sunset at 17:14 -03.
Sunshine
In September, the average sunshine is 7.4h.UV index
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index, 6 in September, converts into the following recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Mata Redonda have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index reading in September?
Average temperature in September
Mata Redonda, Brazil
- Average high temperature in September: 28.2°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 (26.9°C).
- Average low temperature in September: 21.3°C
The month with the highest average low temperature is February (24.1°C).
The coldest month (with the lowest average low temperature) is August (20.8°C).
Average pressure in September
Mata Redonda, Brazil
- Average pressure in September: 1015.5mbar
The month with the highest atmospheric pressure is August (1016.1mbar).
The month with the lowest atmospheric pressure is February (1011.8mbar).
Average wind speed in September
Mata Redonda, Brazil
- Average wind speed in September: 13.4km/h
The windiest month (with the highest average wind speed) is September (13.4km/h).
The calmest month (with the lowest average wind speed) is April (9.7km/h).
Average humidity in September
Mata Redonda, Brazil
- Average humidity in September: 78%
The months with the highest relative humidity are June and July (85%).
The months with the lowest relative humidity are November and December (72%).
Average rainfall in September
Mata Redonda, Brazil
- Average rainfall in September: 22mm
The wettest months (with the highest rainfall) are June and July (66mm).
The driest month (with the least rainfall) is November (13mm).
Average rainfall days in September
Mata Redonda, Brazil
- Average rainfall days in September: 18.7 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is February (17.3 days).
Average daylight in September /
Average sunshine in September
Mata Redonda, 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 42min).
- Average sunshine in September: 7h and 2min
The months with the most sunshine are March and November (Average sunshine: 7h and 30min).
The month with the least sunshine is July (Average sunshine: 6h and 12min).
Average sunshine days in September
Mata Redonda, Brazil
- Average sunshine days in September: 6.9 days
The month with the most sunshine days is December (8.4 days).
The month with the least sunshine days is July (5.3 days).
Average UV index in September
Mata Redonda, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 5).
Average cloud cover in September
Mata Redonda, Brazil
- Average cloud cover in September: 48
The month with the most cloud cover is July (Cloud cover 55).
The months with the least cloud cover are March and November (Cloud cover 43).
Average visibility in September
Mata Redonda, Brazil
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, September, October, November and December (10km).
The months with the lowest visibility are May and June (8km).
