September weather forecast
João Pessoa, Brazil

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Weather in September

In September, João Pessoa experiences a significant decrease in rainfall, settling at 87mm (3.43"), marking the retreat of Monsoons. There's a slight increase in temperatures, and the sea temperature remains stable, signalling the beginning of the warmer season. As a result of these changes, the city sees a gradual increase in daylight hours while maintaining comfortable humidity levels.

Temperature

The high-temperature average in September for João Pessoa is a still warm 28.3°C (82.9°F), staying closely aligned with August's conditions. Throughout September, the average low-temperature records at an agreeable 21.5°C (70.7°F).

Heat index

Throughout September, the heat index is evaluated at a tropical 32°C (89.6°F). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. 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', evaluates the perceived heat by adding the effect of moisture in the air. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important 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.

Humidity

The average relative humidity in September in João Pessoa is 77%.

Rainfall

In João Pessoa, in September, during 11 rainfall days, 87mm (3.43") of precipitation is typically accumulated. In João Pessoa, during the entire year, the rain falls for 149 days and collects up to 2145mm (84.45") of precipitation.

Sea temperature

August and September, with an average sea temperature of 26.6°C (79.9°F), are months with the coldest seawater in João Pessoa.
Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are considered superb and highly pleasant for water activities over extended periods.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:19 and sunset at 17:18. On the last day of September, sunrise is at 05:04 and sunset at 17:14 -03.

Sunshine

In João Pessoa, the average sunshine in September is 7.8h.

Frequently asked questions

How hot is September in João Pessoa?

João Pessoa in September has an average high-temperature of 28.3°C (82.9°F) and an average low-temperature of 21.5°C (70.7°F). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 32°C (89.6°F).

What is the average humidity in September in João Pessoa?

In September, the average relative humidity is 77%.

How many days does it rain in September in João Pessoa?

In September, in João Pessoa, Brazil, the rain falls for 11 days. Throughout September, 87mm (3.43") of precipitation is accumulated.

When is the sea coldest in João Pessoa?

The months with the coldest seawater are August and September, with an average sea temperature of 26.6°C (79.9°F).

How warm is the water in September in João Pessoa?

In September, the average sea temperature in João Pessoa, Brazil, is 26.6°C (79.9°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does João Pessoa have in September?

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

When are sunrise and sunset in September in João Pessoa?

On the first day of September in João Pessoa, Brazil, sunrise is at 05:19 and sunset at 17:18. On the last day of the month, sunrise is at 05:04 and sunset at 17:14 -03.

How long on average sun shines in September in João Pessoa?

In João Pessoa, the average sunshine duration in September is 7.8h.

Average temperature in September
João Pessoa, Brazil

Average temperature in September - João Pessoa, Brazil
  • Average high temperature in September: 28.3°C

The warmest month (with the highest average high temperature) is February (30.5°C).
The month with the lowest average high temperature is July (27.5°C).

  • Average low temperature in September: 21.5°C

The month with the highest average low temperature is December (23.9°C).
The coldest month (with the lowest average low temperature) is August (20.5°C).

Average humidity in September
João Pessoa, Brazil

Average humidity in September - João Pessoa, Brazil
  • Average humidity in September: 77%

The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is October (73%).

Average rainfall in September
João Pessoa, Brazil

Average rainfall in September - João Pessoa, Brazil
  • Average rainfall in September: 87.2mm

The wettest month (with the highest rainfall) is April (349.8mm).
The driest month (with the least rainfall) is November (24.9mm).

Average rainfall days in September
João Pessoa, Brazil

Average rainfall days in September - João Pessoa, Brazil
  • Average rainfall days in September: 11 days

The month with the highest number of rainy days is July (21 days).
The months with the least rainy days are November and December (5 days).

Average sea temperature in September
João Pessoa, Brazil

Average sea temperature in September - João Pessoa, Brazil
  • Average sea temperature in September: 26.6°C

The best month for swimming (with the highest average sea temperature) is March (29°C).
The coldest months (with the lowest average sea temperature) are August and September (26.6°C).

Average daylight in September /
Average sunshine in September
João Pessoa, Brazil

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

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is November (Average sunshine: 9h and 6min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).

João Pessoa, Brazil

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