September weather forecastJaci, Brazil

September

Weather in September

September, the first month of the spring in Jaci, is a hot month, with an average temperature varying between 19°C (66.2°F) and 32.2°C (90°F).

Temperature

September is the month when Jaci experiences its warmest temperatures, averaging a high of 32.2°C (90°F) and a low of 19°C (66.2°F).

Heat index

September's mean heat index is evaluated at a torrid 35°C (95°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for 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.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

The months with the lowest humidity in Jaci are August and September, with an average relative humidity of 52%.

Rainfall

In Jaci, during September, the rain falls for 8.9 days and regularly aggregates up to 51mm (2.01") of precipitation. Throughout the year, in Jaci, Brazil, there are 208.9 rainfall days, and 1257mm (49.49") of precipitation is accumulated.

Daylight

In September, the average length of the day is 11h and 59min.
On the first day of September in Jaci, sunrise is at 06:26 and sunset at 18:09. On the last day of the month, sunrise is at 05:59 and sunset at 18:16 -03.

Sunshine

In September, the average sunshine is 9.4h.

UV index

The months with the highest UV index in Jaci are January, March through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 6 in September suggests the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

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

Frequently asked questions

Jaci reaches its average highest temperatures in September, measuring 32.2°C (90°F) at the peak and 19°C (66.2°F) at the lowest.

During September, Jaci experiences an average high-temperature of 32.2°C (90°F) and a low-temperature of 19°C (66.2°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 35°C (95°F).

The months with the lowest humidity are August and September, with an average relative humidity of 52%.

In September, the average relative humidity is 52%.

In Jaci, Brazil, in September, it is raining for 8.9 days, with typically 51mm (2.01") of accumulated precipitation.

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

In September, on the first day of the month, sunrise is at 06:26 and sunset at 18:09. On the last day of the month, in Jaci, sunrise is at 05:59 and sunset at 18:16 -03.

In September, the average sunshine duration in Jaci is 9.4h.

January, March through December, with an average maximum UV index of 6, are months with the highest UV index.

In September, the average daily maximum UV index in Jaci is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

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

Aug

September

Oct

Average high temperature

29.8°C

32.2°C

31.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

11km/h

10.7km/h

10.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

26.9

11.4

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Jaci, Brazil

Average high temperature in September: 32.2°C

The warmest month (with the highest average high temperature) is September (32.2°C).
The month with the lowest average high temperature is June (25.3°C).

Average low temperature in September: 19°C

The month with the highest average low temperature is December (21.2°C).
The coldest month (with the lowest average low temperature) is June (15.5°C).

Average pressure in September
Jaci, Brazil

Average pressure in September: 1013.9mbar

The month with the highest atmospheric pressure is July (1017.9mbar).
The months with the lowest atmospheric pressure are November and December (1010mbar).

Average wind speed in September
Jaci, Brazil

Average wind speed in September: 10km/h

The windiest months (with the highest average wind speed) are August and September (10km/h).
The calmest month (with the lowest average wind speed) is February (6.9km/h).

Average humidity in September
Jaci, Brazil

Average humidity in September: 52%

The month with the highest relative humidity is March (86%).
The months with the lowest relative humidity are August and September (52%).

Average rainfall in September
Jaci, Brazil

Average rainfall in September: 51mm

The wettest month (with the highest rainfall) is January (224mm).
The driest month (with the least rainfall) is August (9mm).

Average rainfall days in September
Jaci, Brazil

Average rainfall days in September: 8.9 days

The month with the highest number of rainy days is January (29.6 days).
The month with the least rainy days is August (3.3 days).

Average daylight in September /
Average sunshine in September
Jaci, Brazil

Average daylight in September: 12h and 0min

The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).

Average sunshine in September: 9h and 24min

The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 7h and 0min).

Average sunshine days in September
Jaci, Brazil

Average sunshine days in September: 20 days

The month with the most sunshine days is August (26.9 days).
The month with the least sunshine days is January (1.1 days).

Average UV index in September
Jaci, Brazil

Average UV index in September: 6

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