September weather forecastColinas do Tocantins, Brazil

September

Weather in September

The first month of the spring, September, is also a sweltering month in Colinas do Tocantins, Brazil, with an average temperature fluctuating between 23.8°C (74.8°F) and 37.2°C (99°F).

Temperature

In Colinas do Tocantins, the peak average temperatures are observed in September, with a high of 37.2°C (99°F) and a low of 23.8°C (74.8°F).

Heat index

September's mean heat index is estimated at a blistering 42°C (107.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The months with the lowest humidity in Colinas do Tocantins, Brazil, are August and September, with an average relative humidity of 40%.

Rainfall

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

Daylight

The average length of the day in September in Colinas do Tocantins is 12h and 4min.
On the first day of the month, sunrise is at 06:14 and sunset at 18:12. On the last day of September, sunrise is at 05:58 and sunset at 18:08 -03.

Sunshine

In September, the average sunshine 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 reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.

Updated: Aug 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The month of September sees the average highest temperatures, reaching 37.2°C (99°F) at the peak and 23.8°C (74.8°F) at the low.

The average high-temperature and low-temperature during September are 37.2°C (99°F) and 23.8°C (74.8°F) respectively. In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 42°C (107.6°F).

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

In September, the average relative humidity is 40%.

In Colinas do Tocantins, in September, during 4.6 rainfall days, 8mm (0.31") of precipitation is typically accumulated.

The average day length in September is 12h and 4min.

In September, on the first day of the month, sunrise is at 06:14 and sunset at 18:12. On the last day of the month, sunrise is at 05:58 and sunset at 18:08 -03.

In September, the average sunshine duration is 9.6h.

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

In Colinas do Tocantins, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health risk 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
Colinas do Tocantins, 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
Colinas do Tocantins, 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
Colinas do Tocantins, 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
Colinas do Tocantins, 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
Colinas do Tocantins, 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
Colinas do Tocantins, 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
Colinas do Tocantins, 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
Colinas do Tocantins, 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
Colinas do Tocantins, 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).