September weather forecastArapoema, Brazil

September

Weather in September

September, the first month of the spring in Arapoema, is also a fiery hot month, with an average temperature ranging between min 23.8°C (74.8°F) and max 37.2°C (99°F).

Temperature

Arapoema reaches its highest average temperatures in September, measuring 37.2°C (99°F) at the peak and 23.8°C (74.8°F) at the lowest.

Heat index

The heat index in September is estimated at a scorching 42°C (107.6°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
The standards for the heat index are set for locations in shade and under light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', comes about by integrating the temperature readings with the humidity levels. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The months with the lowest humidity in Arapoema are August and September, with an average relative humidity of 40%.

Rainfall

In Arapoema, during September, the rain falls for 4.6 days and regularly aggregates up to 8mm (0.31") of precipitation. Throughout the year, in Arapoema, Brazil, there are 213.3 rainfall days, and 1154mm (45.43") of precipitation is accumulated.

Daylight

In Arapoema, the average length of the day in September is 12h and 4min.
On the first day of September in Arapoema, sunrise is at 06:16 and sunset at 18:15. On the last day of the month, sunrise is at 06:00 and sunset at 18:11 -03.

Sunshine

The average sunshine in September in Arapoema is 9.6h.

UV index

May through September and November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.

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

Frequently asked questions

September, characterized by an average high temperature of 37.2°C (99°F) and a low temperature of 23.8°C (74.8°F), is generally the warmest month.

During September, Arapoema experiences an average high-temperature of 37.2°C (99°F) and a low-temperature of 23.8°C (74.8°F). In September, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 42°C (107.6°F).

August and September, with an average relative humidity of 40%, are the least humid months in Arapoema, Brazil.

In September, the average relative humidity in Arapoema, Brazil, is 40%.

In September, in Arapoema, Brazil, the rain falls for 4.6 days. Throughout September, 8mm (0.31") of precipitation is accumulated.

In September, the average day length in Arapoema is 12h and 4min.

In September, on the first day of the month, sunrise is at 06:16 and sunset at 18:15. On the last day of the month, in Arapoema, sunrise is at 06:00 and sunset at 18:11 -03.

In Arapoema, the average sunshine duration in September is 9.6h.

May through September and November, with an average maximum UV index of 7, are months with the highest UV index.

In Arapoema, Brazil, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from 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

36.4°C

37.2°C

35.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.7km/h

7.1km/h

6.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

30.3

23.7

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Arapoema, Brazil

Average high temperature in September: 37.2°C

The warmest month (with the highest average high temperature) is September (37.2°C).
The month with the lowest average high temperature is February (30.4°C).

Average low temperature in September: 23.8°C

The month with the highest average low temperature is September (23.8°C).
The coldest month (with the lowest average low temperature) is July (20.3°C).

Average pressure in September
Arapoema, Brazil

Average pressure in September: 1010.7mbar

The months with the highest atmospheric pressure are June and July (1013.4mbar).
The month with the lowest atmospheric pressure is November (1009.1mbar).

Average wind speed in September
Arapoema, Brazil

Average wind speed in September: 6.5km/h

The windiest month (with the highest average wind speed) is August (6.7km/h).
The calmest month (with the lowest average wind speed) is March (4.2km/h).

Average humidity in September
Arapoema, Brazil

Average humidity in September: 40%

The months with the highest relative humidity are February and March (85%).
The months with the lowest relative humidity are August and September (40%).

Average rainfall in September
Arapoema, Brazil

Average rainfall in September: 8mm

The wettest month (with the highest rainfall) is March (204mm).
The driest month (with the least rainfall) is August (1mm).

Average rainfall days in September
Arapoema, Brazil

Average rainfall days in September: 4.6 days

The month with the highest number of rainy days is March (29.6 days).
The month with the least rainy days is August (0.6 days).

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

Average daylight in September: 12h and 6min

The month with the longest days is December (Average daylight: 12h and 36min).
The month with the shortest days is June (Average daylight: 11h and 42min).

Average sunshine in September: 9h and 36min

The month with the most sunshine is October (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 6h and 54min).

Average sunshine days in September
Arapoema, Brazil

Average sunshine days in September: 23.7 days

The month with the most sunshine days is August (30.3 days).
The month with the least sunshine days is March (0.6 days).

Average UV index in September
Arapoema, Brazil

Average UV index in September: 7

The months with the highest UV index are May, June, July, August, September and November (UV index 7).
The months with the lowest UV index are January, February, March, April, October and December (UV index 6).