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 advent of September reveals an average high-temperature of a still moderately hot 28.3°C (82.9°F), showing minimal difference from the prior month. During September, Riachão do Dantas observes a consistent average nighttime temperature of 19.2°C (66.6°F).Heat index
For September, the heat index is evaluated at a tropical 33°C (91.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
Humidity
The average relative humidity in September in Riachão do Dantas, Brazil, is 80%.Rainfall
In Riachão do Dantas, during September, the rain falls for 18.5 days and regularly aggregates up to 25mm (0.98") of precipitation. In Riachão do Dantas, during the entire year, the rain falls for 214 days and collects up to 444mm (17.48") of precipitation.Daylight
In September, the average length of the day is 12h and 3min.On the first day of the month, sunrise is at 05:33 and sunset at 17:27. On the last day of September, in Riachão do Dantas, Brazil, sunrise is at 05:14 and sunset at 17:26 -03.
Sunshine
In Riachão do Dantas, the average sunshine in September is 6.9h.UV index
The months with the lowest UV index in Riachão do Dantas are April through October, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 6 in September translates into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Riachão do Dantas during September?
What is the average humidity in September in Riachão do Dantas?
How much does it rain in Riachão do Dantas in September?
How many hours of daylight does Riachão do Dantas have in September?
When are sunrise and sunset in September in Riachão do Dantas?
How many hours of sunshine does Riachão do Dantas have in September?
What is the month with the lowest UV index in Riachão do Dantas?
What is the UV index intensity in September in Riachão do Dantas?
Average temperature in September
Riachão do Dantas, Brazil
- Average high temperature in September: 28.3°C
The warmest month (with the highest average high temperature) is March (32.5°C).
The month with the lowest average high temperature is July (26.6°C).
- Average low temperature in September: 19.2°C
The month with the highest average low temperature is March (22.5°C).
The coldest month (with the lowest average low temperature) is August (18.3°C).
Average pressure in September
Riachão do Dantas, Brazil
- Average pressure in September: 1016.4mbar
The months with the highest atmospheric pressure are July and August (1017.4mbar).
The months with the lowest atmospheric pressure are March and December (1011.9mbar).
Average wind speed in September
Riachão do Dantas, Brazil
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is November (13.5km/h).
The calmest month (with the lowest average wind speed) is May (9.8km/h).
Average humidity in September
Riachão do Dantas, Brazil
- Average humidity in September: 80%
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January, February, March and December (73%).
Average rainfall in September
Riachão do Dantas, Brazil
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is July (58mm).
The driest month (with the least rainfall) is November (18mm).
Average rainfall days in September
Riachão do Dantas, Brazil
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is July (26.5 days).
The month with the least rainy days is November (10.5 days).
Average daylight in September /
Average sunshine in September
Riachão do Dantas, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).
- Average sunshine in September: 6h and 5min
The month with the most sunshine is January (Average sunshine: 8h and 54min).
The month with the least sunshine is May (Average sunshine: 5h and 54min).
Average sunshine days in September
Riachão do Dantas, Brazil
- Average sunshine days in September: 8.3 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (2.7 days).
Average UV index in September
Riachão do Dantas, Brazil
- Average UV index in September: 6
The months with the highest UV index are January, February, March, November and December (UV index 7).
The months with the lowest UV index are April, May, June, July, August, September and October (UV index 6).
Average cloud cover in September
Riachão do Dantas, Brazil
- Average cloud cover in September: 53
The month with the most cloud cover is July (Cloud cover 60).
The month with the least cloud cover is December (Cloud cover 41).
Average visibility in September
Riachão do Dantas, Brazil
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, November and December (9km).
The months with the lowest visibility are April, May, June, July, August and September (7km).
