September weather forecastDom Basílio, Brazil

September

Weather in September

The first month of the spring, September, is still a warm month in Dom Basílio, Brazil, with temperature in the range of an average high of 28.5°C (83.3°F) and an average low of 16.6°C (61.9°F).

Temperature

Dom Basílio, Brazil, experiences an average high-temperature of a still warm 28.5°C (83.3°F) in September, subtly different from August's 26.3°C (79.3°F). An average temperature of 16.6°C (61.9°F) marks the nights in Dom Basílio in September.

Heat index

For most parts of September, the heat index is estimated at a tropical 31°C (87.8°F). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.

Humidity

With an average relative humidity of 63%, September is the least humid month.

Rainfall

In September, in Dom Basílio, the rain falls for 5.5 days. Throughout September, 7mm (0.28") of precipitation is accumulated. Throughout the year, in Dom Basílio, there are 151.9 rainfall days, and 611mm (24.06") of precipitation is accumulated.

Daylight

In September, the average length of the day in Dom Basílio is 12h and 2min.
On the first day of the month, sunrise is at 05:51 and sunset at 17:42. On the last day of September, in Dom Basílio, sunrise is at 05:30 and sunset at 17:43 -03.

Sunshine

In September, the average sunshine is 8.6h.

UV index

January through May, August through December, with an average maximum UV index of 6, are months with the highest UV index in Dom Basílio. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: An average maximum UV index of 6 in September leads to these recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Updated: Feb 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In September, in Dom Basílio, the average high-temperature is 28.5°C (83.3°F), and the average low-temperature is 16.6°C (61.9°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is estimated at 31°C (87.8°F).

September is the least humid month in Dom Basílio, Brazil, with an average relative humidity of 63%.

In Dom Basílio, Brazil, the average relative humidity in September is 63%.

In September, in Dom Basílio, the rain falls for 5.5 days. Throughout September, 7mm (0.28") of precipitation is accumulated.

The average day length in September is 12h and 2min.

In September, on the first day of the month, sunrise is at 05:51 and sunset at 17:42. On the last day of the month, sunrise is at 05:30 and sunset at 17:43 -03.

In September, the average sunshine duration is 8.6h.

January through May, August through December, with an average maximum UV index of 6, are months with the highest UV index in Dom Basílio, Brazil.

In Dom Basílio, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

26.3°C

28.5°C

29.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.2km/h

13.6km/h

12.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

18.8

20.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Dom Basílio, Brazil

Average high temperature in September: 28.5°C

The warmest month (with the highest average high temperature) is October (29.5°C).
The month with the lowest average high temperature is July (24.8°C).

Average low temperature in September: 16.6°C

The month with the highest average low temperature is November (19.1°C).
The coldest month (with the lowest average low temperature) is July (15.6°C).

Average pressure in September
Dom Basílio, Brazil

Average pressure in September: 1016.7mbar

The month with the highest atmospheric pressure is July (1018.9mbar).
The month with the lowest atmospheric pressure is November (1012.6mbar).

Average wind speed in September
Dom Basílio, Brazil

Average wind speed in September: 12.9km/h

The windiest month (with the highest average wind speed) is September (12.9km/h).
The calmest month (with the lowest average wind speed) is March (8.1km/h).

Average humidity in September
Dom Basílio, Brazil

Average humidity in September: 63%

The month with the highest relative humidity is April (78%).
The month with the lowest relative humidity is September (63%).

Average rainfall in September
Dom Basílio, Brazil

Average rainfall in September: 7mm

The wettest month (with the highest rainfall) is December (114mm).
The driest month (with the least rainfall) is August (4mm).

Average rainfall days in September
Dom Basílio, Brazil

Average rainfall days in September: 5.5 days

The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is September (5.5 days).

Average daylight in September /
Average sunshine in September
Dom Basílio, Brazil

Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 18min).

Average sunshine in September: 8h and 36min

The month with the most sunshine is December (Average sunshine: 9h and 54min).
The months with the least sunshine are June and July (Average sunshine: 6h and 0min).

Average sunshine days in September
Dom Basílio, Brazil

Average sunshine days in September: 20.5 days

The month with the most sunshine days is September (20.5 days).
The month with the least sunshine days is November (10.4 days).

Average UV index in September
Dom Basílio, Brazil

Average UV index in September: 6

The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 6).
The months with the lowest UV index are June and July (UV index 5).

Average cloud cover in September
Dom Basílio, Brazil

Average cloud cover in September: 29

The months with the most cloud cover are April and May (Cloud cover 49).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in September
Dom Basílio, Brazil

Average visibility in September: 10km

The months with the highest visibility are September and October (10km).
The months with the lowest visibility are January, February, March and April (8km).