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
Weather in September
Temperature
The beginning of September records an average high-temperature of a still warm 27°C (80.6°F), marking a negligible difference from August's 24.8°C (76.6°F). In September, the temperature in Monte Sião registers a significant dip to an average of 14.5°C (58.1°F) at night.Heat index
For most parts of September, the heat index is computed to be 29°C (84.2°F). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Humidity
With an average relative humidity of 67%, September is the least humid month in Monte Sião.Rainfall
In September, in Monte Sião, the rain falls for 10.2 days. Throughout September, 35mm (1.38") of precipitation is accumulated. In Monte Sião, during the entire year, the rain falls for 199.3 days and collects up to 850mm (33.46") of precipitation.Daylight
The average length of the day in September is 11h and 59min.On the first day of the month, sunrise is at 06:15 and sunset at 17:56. On the last day of September, in Monte Sião, Brazil, sunrise is at 05:47 and sunset at 18:04 -03.
Sunshine
With an average of 9.2h of sunshine, September has the most sunshine of the year in Monte Sião, Brazil.UV index
March through September, with an average maximum UV index of 5, are months with the lowest UV index in Monte Sião. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What are September temperatures in Monte Sião?
What is the least humid month in Monte Sião?
What is the average humidity in September in Monte Sião?
How many days does it rain in September in Monte Sião?
What is the average length of the day in September in Monte Sião?
When are sunrise and sunset in September in Monte Sião?
What month has the most sunshine in Monte Sião?
How many hours of sunshine does Monte Sião have in September?
What are the months with the lowest UV index in Monte Sião?
What is the UV index reading in September in Monte Sião?
Average temperature in September
Monte Sião, Brazil
- Average high temperature in September: 27°C
The warmest month (with the highest average high temperature) is October (27.4°C).
The month with the lowest average high temperature is June (21.8°C).
- Average low temperature in September: 14.5°C
The months with the highest average low temperature are January and December (17.5°C).
The coldest month (with the lowest average low temperature) is July (11.6°C).
Average pressure in September
Monte Sião, Brazil
- Average pressure in September: 1017.1mbar
The month with the highest atmospheric pressure is July (1020.4mbar).
The month with the lowest atmospheric pressure is December (1012.1mbar).
Average wind speed in September
Monte Sião, Brazil
- Average wind speed in September: 9.3km/h
The windiest month (with the highest average wind speed) is September (9.3km/h).
The calmest month (with the lowest average wind speed) is March (7.1km/h).
Average humidity in September
Monte Sião, Brazil
- Average humidity in September: 67%
The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is September (67%).
Average rainfall in September
Monte Sião, Brazil
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is January (164mm).
The driest month (with the least rainfall) is August (15mm).
Average rainfall days in September
Monte Sião, Brazil
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is January (26.6 days).
The month with the least rainy days is August (6.1 days).
Average daylight in September /
Average sunshine in September
Monte Sião, 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 12min).
The month with the least sunshine is January (Average sunshine: 7h and 24min).
Average sunshine days in September
Monte Sião, Brazil
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is August (23.8 days).
The month with the least sunshine days is February (3.3 days).
Average UV index in September
Monte Sião, Brazil
- Average UV index in September: 5
The months with the highest UV index are January, February, October, November and December (UV index 6).
The months with the lowest UV index are March, April, May, June, July, August and September (UV index 5).
Average cloud cover in September
Monte Sião, Brazil
- Average cloud cover in September: 23
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in September
Monte Sião, Brazil
- Average visibility in September: 9km
The months with the highest visibility are July, August, September and October (9km).
The months with the lowest visibility are January, February, March, April and May (7km).
Monte Sião, Brazil
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