September weather forecastHeliodora, Brazil

September

Weather in September

The first month of the spring, September, is a moderately hot month in Heliodora, Brazil, with an average temperature fluctuating between 24.5°C (76.1°F) and 12.5°C (54.5°F).

Temperature

Transitioning into September, Heliodora records an average high-temperature of a warm 24.5°C (76.1°F), almost identical to August's 22.1°C (71.8°F). Despite a stark disparity with daily highs, Heliodora records an average nighttime temperature of 12.5°C (54.5°F) in September.

Humidity

September is the least humid month, with an average relative humidity of 75%.

Rainfall

In Heliodora, in September, it is raining for 14.3 days, with typically 56mm (2.2") of accumulated precipitation. Throughout the year, in Heliodora, there are 240.7 rainfall days, and 1542mm (60.71") of precipitation is accumulated.

Daylight

In September, the average length of the day is 11h and 59min.
On the first day of the month, sunrise is at 06:11 and sunset at 17:52. On the last day of September, sunrise is at 05:43 and sunset at 18:00 -03.

Sunshine

With an average of 9h of sunshine, September has the most sunshine of the year.

UV index

The months with the highest UV index in Heliodora are January through March, August through December, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a regular UV index of 5 translates into these guidelines:
Take precautions - Protection against sun damage is advised. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

An average high-temperature, in September, in Heliodora, is 24.5°C (76.1°F) and the average low-temperature is 12.5°C (54.5°F).

With an average relative humidity of 75%, September is the least humid month in Heliodora, Brazil.

In September, the average relative humidity in Heliodora is 75%.

In Heliodora, in September, during 14.3 rainfall days, 56mm (2.2") of precipitation is typically accumulated.

The average day length in September is 11h and 59min.

On the first day of September in Heliodora, Brazil, sunrise is at 06:11 and sunset at 17:52. On the last day of the month, sunrise is at 05:43 and sunset at 18:00 -03.

September has the most sunshine of the year in Heliodora, Brazil, with an average of 9h of sunshine.

In Heliodora, the average sunshine duration in September is 9h.

The months with the highest UV index in Heliodora are January through March, August through December, with an average maximum UV index of 5.

In Heliodora, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health risk 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

22.1°C

24.5°C

24.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.3km/h

6.7km/h

6.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

13.4

6.7

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Heliodora, Brazil

Average high temperature in September: 24.5°C

The warmest month (with the highest average high temperature) is February (24.6°C).
The month with the lowest average high temperature is June (19.6°C).

Average low temperature in September: 12.5°C

The month with the highest average low temperature is December (15.9°C).
The coldest month (with the lowest average low temperature) is July (9.9°C).

Average pressure in September
Heliodora, Brazil

Average pressure in September: 1017.6mbar

The month with the highest atmospheric pressure is July (1020.6mbar).
The month with the lowest atmospheric pressure is December (1012.6mbar).

Average wind speed in September
Heliodora, Brazil

Average wind speed in September: 6.4km/h

The windiest month (with the highest average wind speed) is September (6.4km/h).
The calmest months (with the lowest average wind speed) are February and April (5km/h).

Average humidity in September
Heliodora, Brazil

Average humidity in September: 75%

The month with the highest relative humidity is March (91%).
The month with the lowest relative humidity is September (75%).

Average rainfall in September
Heliodora, Brazil

Average rainfall in September: 56mm

The wettest month (with the highest rainfall) is January (305mm).
The driest month (with the least rainfall) is June (21mm).

Average rainfall days in September
Heliodora, Brazil

Average rainfall days in September: 14.3 days

The month with the highest number of rainy days is January (29.9 days).
The month with the least rainy days is August (8.2 days).

Average daylight in September /
Average sunshine in September
Heliodora, 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 0min

The month with the most sunshine is September (Average sunshine: 9h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 36min).

Average sunshine days in September
Heliodora, Brazil

Average sunshine days in September: 13.4 days

The month with the most sunshine days is August (21 days).
The month with the least sunshine days is December (0.4 days).

Average UV index in September
Heliodora, Brazil

Average UV index in September: 5

The months with the highest UV index are January, February, March, August, September, October, November and December (UV index 5).
The months with the lowest UV index are April, May, June and July (UV index 4).