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's arrival shows an average high-temperature of a still hot 33.8°C (92.8°F), hardly different from the previous month. September nights present a stark temperature decrease to a pleasant 20.9°C (69.6°F).Heat index
For most parts of September, the heat index is evaluated at a fiery hot 38°C (100.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.Heat index determinations are made taking into account the shade and light air movements. 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 'felt air temperature' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
In Rafael Fernandes, the average relative humidity in September is 50%.Rainfall
September is the month with the least rainfall. Rain falls for 2.7 days and accumulates 2mm (0.08") of precipitation.Daylight
In September, the average length of the day is 12h and 5min.On the first day of the month, sunrise is at 05:32 and sunset at 17:32. On the last day of September, in Rafael Fernandes, sunrise is at 05:17 and sunset at 17:27 -03.
Sunshine
With an average of 9.8h of sunshine, September has the most sunshine of the year in Rafael Fernandes.UV index
The months with the highest UV index in Rafael Fernandes, Brazil, are January through March, August through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for the average person.Note: During September, 7 as the daily maximum UV index converts into the following advice:
Shield from overexposure. Defense against sun-related harm is required. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Rafael Fernandes in September?
What is the average humidity in September in Rafael Fernandes?
What is the driest month in Rafael Fernandes?
How much does it rain in Rafael Fernandes in September?
What is the average length of the day in September in Rafael Fernandes?
What time are sunrise and sunset in September in Rafael Fernandes?
What month has the most sunshine in Rafael Fernandes?
How many hours of sunshine does Rafael Fernandes have in September?
What are the months with the highest UV index in Rafael Fernandes?
What is the UV index intensity in September in Rafael Fernandes?
Average temperature in September
Rafael Fernandes, Brazil
- Average high temperature in September: 33.8°C
The warmest month (with the highest average high temperature) is October (34.7°C).
The month with the lowest average high temperature is June (30.6°C).
- Average low temperature in September: 20.9°C
The month with the highest average low temperature is December (23.3°C).
The coldest month (with the lowest average low temperature) is July (19°C).
Average pressure in September
Rafael Fernandes, Brazil
- Average pressure in September: 1013.9mbar
The month with the highest atmospheric pressure is July (1015.4mbar).
The month with the lowest atmospheric pressure is November (1010.5mbar).
Average wind speed in September
Rafael Fernandes, Brazil
- Average wind speed in September: 16.2km/h
The windiest month (with the highest average wind speed) is October (16.6km/h).
The calmest month (with the lowest average wind speed) is April (9.6km/h).
Average humidity in September
Rafael Fernandes, Brazil
- Average humidity in September: 50%
The months with the highest relative humidity are April and May (73%).
The months with the lowest relative humidity are October and November (48%).
Average rainfall in September
Rafael Fernandes, Brazil
- Average rainfall in September: 2mm
The wettest month (with the highest rainfall) is March (123mm).
The driest month (with the least rainfall) is September (2mm).
Average rainfall days in September
Rafael Fernandes, Brazil
- Average rainfall days in September: 2.7 days
The month with the highest number of rainy days is March (24.8 days).
The month with the least rainy days is September (2.7 days).
Average daylight in September /
Average sunshine in September
Rafael Fernandes, 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 48min).
- Average sunshine in September: 9h and 5min
The month with the most sunshine is September (Average sunshine: 9h and 48min).
The months with the least sunshine are March and April (Average sunshine: 8h and 12min).
Average sunshine days in September
Rafael Fernandes, Brazil
- Average sunshine days in September: 26.1 days
The month with the most sunshine days is September (26.1 days).
The month with the least sunshine days is April (4.9 days).
Average UV index in September
Rafael Fernandes, Brazil
- Average UV index in September: 7
The months with the highest UV index are January, February, March, August, September, October, November and December (UV index 7).
The months with the lowest UV index are April, May, June and July (UV index 6).
Average cloud cover in September
Rafael Fernandes, Brazil
- Average cloud cover in September: 16
The month with the most cloud cover is April (Cloud cover 44).
The month with the least cloud cover is September (Cloud cover 16).
Average visibility in September
Rafael Fernandes, Brazil
- Average visibility in September: 10km
The months with the highest visibility are January, February, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are March, April and May (9km).
