September weather forecastPeritoró, Brazil

September

Weather in September

September, the first month of the spring in Peritoró, is a very hot month, with an average temperature varying between 22°C (71.6°F) and 35.5°C (95.9°F).

Temperature

The transition into September notes an average high-temperature of a torrid 35.5°C (95.9°F), revealing a mild distinction from the 33.9°C (93°F) in August. Despite considerable daily temperature swings, a steady low-temperature average of 22°C (71.6°F) is noted throughout September.

Heat index

The heat index value for September is computed to be a blazing hot 48°C (118.4°F). Mind: Heat cramps along with heat exhaustion are anticipated. Heatstroke can develop with continued physical activity.
Remember that heat index calculations are made for conditions in the shade with light wind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

The least humid month in Peritoró is September, with an average relative humidity of 62%.

Rainfall

September is the month with the least rainfall. Rain falls for 10.4 days and accumulates 12mm (0.47") of precipitation.

Daylight

In September, the average length of the day is 12h and 5min.
On the first day of September, sunrise is at 05:56 and sunset at 17:58. On the last day of the month, sunrise is at 05:42 and sunset at 17:51 -03.

Sunshine

With an average of 8.7h of sunshine, September has the most sunshine of the year.

UV index

The months with the highest UV index are January, July through November, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for average individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Updated: Jun 7, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Peritoró in September has an average high-temperature of 35.5°C (95.9°F) and an average low-temperature of 22°C (71.6°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 48°C (118.4°F).

September is the least humid month, with an average relative humidity of 62%.

In Peritoró, the average relative humidity in September is 62%.

The month with the least rainfall is September, when the rain falls for 10.4 days and typically collects 12mm (0.47") of precipitation.

In September, the rain falls for 10.4 days. Throughout September, 12mm (0.47") of precipitation is accumulated.

The average day length in September is 12h and 5min.

On the first day of September, sunrise is at 05:56 and sunset at 17:58. On the last day of the month, sunrise is at 05:42 and sunset at 17:51 -03.

September has the most sunshine of the year, with an average of 8.7h of sunshine.

In Peritoró, the average sunshine duration in September is 8.7h.

The months with the highest UV index are January, July through November, with an average maximum UV index of 7.

In September, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability 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

33.9°C

35.5°C

36°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.8km/h

8.5km/h

9.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

20.6

17.8

15.6

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Peritoró, Brazil

Average high temperature in September: 35.5°C

The warmest month (with the highest average high temperature) is October (36°C).
The month with the lowest average high temperature is April (29.9°C).

Average low temperature in September: 22°C

The months with the highest average low temperature are October and November (23.3°C).
The coldest month (with the lowest average low temperature) is July (20.7°C).

Average pressure in September
Peritoró, Brazil

Average pressure in September: 1011.4mbar

The month with the highest atmospheric pressure is July (1013mbar).
The month with the lowest atmospheric pressure is November (1009mbar).

Average wind speed in September
Peritoró, Brazil

Average wind speed in September: 8.1km/h

The windiest month (with the highest average wind speed) is October (8.4km/h).
The calmest month (with the lowest average wind speed) is April (4.9km/h).

Average humidity in September
Peritoró, Brazil

Average humidity in September: 62%

The month with the highest relative humidity is April (91%).
The month with the lowest relative humidity is September (62%).

Average rainfall in September
Peritoró, Brazil

Average rainfall in September: 12mm

The wettest month (with the highest rainfall) is March (235mm).
The driest month (with the least rainfall) is September (12mm).

Average rainfall days in September
Peritoró, Brazil

Average rainfall days in September: 10.4 days

The month with the highest number of rainy days is March (30.3 days).
The month with the least rainy days is August (8.8 days).

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

Average daylight in September: 12h and 6min

The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 54min).

Average sunshine in September: 8h and 42min

The month with the most sunshine is September (Average sunshine: 8h and 42min).
The month with the least sunshine is April (Average sunshine: 5h and 36min).

Average sunshine days in September
Peritoró, Brazil

Average sunshine days in September: 17.8 days

The month with the most sunshine days is August (20.6 days).
The month with the least sunshine days is March (0.4 days).

Average UV index in September
Peritoró, Brazil

Average UV index in September: 7

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