September weather forecast
Mossoró, Brazil

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Weather in September

The first month of the spring, September, is also a hot month in Mossoró, Brazil, with temperature in the range of an average high of 34.4°C (93.9°F) and an average low of 21.9°C (71.4°F).

Temperature

In September, the average high-temperature registers at a still tropical 34.4°C (93.9°F), nearly identical to August's 33.8°C (92.8°F). Mossoró's nighttime temperatures in September reflect a stark contrast to the day's highs, falling to an average low of 21.9°C (71.4°F).

Heat index

The heat index value during September is appraised at a blisteringly hot 44°C (111.2°F). Be alert: Heat exhaustion along with heat cramps are probable. Heatstroke is a threat with sustained physical activity.
Understanding the heat index involves considering values for shaded locales 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', is a value derived by merging air temperature with the humidity to convey how the climate feels. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

With an average relative humidity of 61%, September is the least humid month in Mossoró, Brazil.

Rainfall

In Mossoró, in September, 6mm (0.24") of precipitation is typically accumulated. During the entire year, Mossoró aggregates up to 788mm (31.02") of precipitation.

Daylight

The average length of the day in September in Mossoró is 12h and 5min.
On the first day of the month, sunrise is at 05:28 and sunset at 17:29. On the last day of September, in Mossoró, sunrise is at 05:14 and sunset at 17:23 -03.

Sunshine

In September, the average sunshine in Mossoró is 9.1h.
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Frequently asked questions

How hot is it in Mossoró in September?

The high-temperature, in September, in Mossoró, records 34.4°C (93.9°F), while the low-temperature is 21.9°C (71.4°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is appraised at 44°C (111.2°F).

What is the least humid month in Mossoró?

With an average relative humidity of 61%, September is the least humid month in Mossoró.

What is the average humidity in September in Mossoró?

In Mossoró, Brazil, the average relative humidity in September is 61%.

How much does it rain in Mossoró in September?

Throughout September, in Mossoró, 6mm (0.24") of precipitation is accumulated.

How many hours of daylight does Mossoró have in September?

In September, the average day length in Mossoró, Brazil, is 12h and 5min.

When are sunrise and sunset in September in Mossoró?

On the first day of September, sunrise is at 05:28 and sunset at 17:29. On the last day of the month, sunrise is at 05:14 and sunset at 17:23 -03.

How many hours of sunshine does Mossoró have in September?

The average sunshine duration in September in Mossoró, Brazil, is 9.1h.

Average temperature in September
Mossoró, Brazil

Average temperature in September - Mossoró, Brazil
  • Average high temperature in September: 34.4°C

The warmest months (with the highest average high temperature) are October and November (34.6°C).
The months with the lowest average high temperature are April, May and June (32.3°C).

  • Average low temperature in September: 21.9°C

The month with the highest average low temperature is January (23.7°C).
The coldest month (with the lowest average low temperature) is August (21.3°C).

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Average humidity in September
Mossoró, Brazil

Average humidity in September - Mossoró, Brazil
  • Average humidity in September: 61%

The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is September (61%).

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Average rainfall in September
Mossoró, Brazil

Average rainfall in September - Mossoró, Brazil
  • Average rainfall in September: 5.9mm

The wettest month (with the highest rainfall) is April (179.6mm).
The driest month (with the least rainfall) is November (3.2mm).

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

Average daylight in September / Average sunshine in September - Mossoró, Brazil
  • Average daylight in September: 12h and 1min

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 48min).

  • Average sunshine in September: 9h and 1min

The months with the most sunshine are October and November (Average sunshine: 9h and 24min).
The month with the least sunshine is March (Average sunshine: 6h and 0min).

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Mossoró, Brazil

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