September weather forecastPoloni, Brazil

September

Weather in September

The first month of the spring, September, is a hot month in Poloni, Brazil, with an average temperature ranging between min 19°C (66.2°F) and max 32.2°C (90°F).

Temperature

Poloni's temperatures tend to reach their peak averages in September, with a high of 32.2°C (90°F) and a low of 19°C (66.2°F).

Heat index

Throughout September, the heat index is estimated at a sweltering 35°C (95°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

August and September, with an average relative humidity of 52%, are the least humid months in Poloni.

Rainfall

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

Daylight

In September, the average length of the day in Poloni is 11h and 59min.
On the first day of September in Poloni, sunrise is at 06:27 and sunset at 18:10. On the last day of the month, sunrise is at 06:00 and sunset at 18:17 -03.

Sunshine

In September, the average sunshine in Poloni is 9.4h.

UV index

January, March through December, with an average maximum UV index of 6, are months with the highest UV index in Poloni. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

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

Frequently asked questions

September, with average temperatures reaching a high of 32.2°C (90°F) and a low of 19°C (66.2°F), is the warmest month in Poloni, Brazil.

In Poloni, in September, the average high-temperature is 32.2°C (90°F), and the average low-temperature is 19°C (66.2°F). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 35°C (95°F).

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

In Poloni, the average relative humidity in September is 52%.

In September, in Poloni, the rain falls for 8.9 days. Throughout September, 51mm (2.01") of precipitation is accumulated.

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

In September, on the first day of the month, sunrise is at 06:27 and sunset at 18:10. On the last day of the month, in Poloni, sunrise is at 06:00 and sunset at 18:17 -03.

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

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

In September, the average daily maximum UV index 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
Poloni, 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
Poloni, 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
Poloni, 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
Poloni, 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
Poloni, 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
Poloni, 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
Poloni, 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
Poloni, 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
Poloni, 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).