September weather forecast
Brufa, Guinea-Bissau

September

Weather in September

The first month of the autumn, September, is also a hot month in Brufa, Guinea-Bissau, with an average temperature varying between 23.2°C (73.8°F) and 31.6°C (88.9°F).

Temperature

Brufa observes a minor difference in average high-temperatures between August's 30.8°C (87.4°F) and September's 31.6°C (88.9°F). An average minimum temperature of 23.2°C (73.8°F) marks the month of September.

Heat index

The heat index in September is estimated at a life-threatening hot 45°C (113°F). Notice: Heat cramps and heat exhaustion are likely. Continued strenuous activity might lead to heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

The average relative humidity in September in Brufa is 84%.

Rainfall

In Brufa, during September, the rain falls for 23.7 days and regularly aggregates up to 152mm (5.98") of precipitation. In Brufa, during the entire year, the rain falls for 109.1 days and collects up to 654mm (25.75") of precipitation.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of September, sunrise is at 06:51 and sunset at 19:12. On the last day of the month, sunrise is at 06:51 and sunset at 18:53 GMT.

Sunshine

In September, the average sunshine is 7h.

UV index

In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.

Frequently asked questions

How hot is it in September?
The average high-temperature and low-temperature during September are 31.6°C (88.9°F) and 23.2°C (73.8°F) respectively. In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 45°C (113°F).
What is the average humidity in September?
The average relative humidity in September is 84%.
How many days does it rain in September?
In Brufa, in September, it is raining for 23.7 days, with typically 152mm (5.98") of accumulated precipitation.
How many hours of daylight does Brufa have in September?
The average day length in September is 12h and 11min.
When is the sunrise / sunset in September?
On the first day of September in Brufa, sunrise is at 06:51 and sunset at 19:12. On the last day of the month, sunrise is at 06:51 and sunset at 18:53 GMT.
How many hours of sunshine does Brufa have in September?
In Brufa, the average sunshine duration in September is 7h.
What is the UV index intensity in September?
In Brufa, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Brufa, Guinea-Bissau
Average temperature in September
Brufa, Guinea-Bissau
  • Average high temperature in September: 31.6°C

The warmest month (with the highest average high temperature) is April (41.3°C).
The month with the lowest average high temperature is August (30.8°C).

  • Average low temperature in September: 23.2°C

The month with the highest average low temperature is June (25.3°C).
The coldest month (with the lowest average low temperature) is January (19.8°C).

Average pressure in September - Brufa, Guinea-Bissau
Average pressure in September
Brufa, Guinea-Bissau
  • Average pressure in September: 1012.1mbar

The month with the highest atmospheric pressure is July (1012.6mbar).
The month with the lowest atmospheric pressure is April (1009.7mbar).

Average wind speed in September - Brufa, Guinea-Bissau
Average wind speed in September
Brufa, Guinea-Bissau
  • Average wind speed in September: 6.5km/h

The windiest month (with the highest average wind speed) is February (9.8km/h).
The calmest month (with the lowest average wind speed) is October (6.2km/h).

Average humidity in September - Brufa, Guinea-Bissau
Average humidity in September
Brufa, Guinea-Bissau
  • Average humidity in September: 84%

The month with the highest relative humidity is August (85%).
The month with the lowest relative humidity is January (20%).

Average rainfall in September - Brufa, Guinea-Bissau
Average rainfall in September
Brufa, Guinea-Bissau
  • Average rainfall in September: 152mm

The wettest month (with the highest rainfall) is August (224mm).
The driest months (with the least rainfall) are January, February, March and December (0mm).

Average rainfall days in September - Brufa, Guinea-Bissau
Average rainfall days in September
Brufa, Guinea-Bissau
  • Average rainfall days in September: 23.7 days

The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is January (0.1 days).

Average daylight in September / Average sunshine in September - Brufa, Guinea-Bissau
Average daylight in September /
Average sunshine in September
Brufa, Guinea-Bissau
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 24min).

  • Average sunshine in September: 7h and 0min

The month with the most sunshine is April (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 5h and 42min).

Average sunshine days in September - Brufa, Guinea-Bissau
Average sunshine days in September
Brufa, Guinea-Bissau
  • Average sunshine days in September: 4.4 days

The month with the most sunshine days is January (30.8 days).
The month with the least sunshine days is August (2.5 days).

Average UV index in September - Brufa, Guinea-Bissau
Average UV index in September
Brufa, Guinea-Bissau
  • Average UV index in September: 7

The months with the highest UV index are March, April and May (UV index 8).
The month with the lowest UV index is August (UV index 6).

Average cloud cover in September - Brufa, Guinea-Bissau
Average cloud cover in September
Brufa, Guinea-Bissau
  • Average cloud cover in September: 51

The month with the most cloud cover is August (Cloud cover 62).
The months with the least cloud cover are March and April (Cloud cover 6).

Average visibility in September - Brufa, Guinea-Bissau
Average visibility in September
Brufa, Guinea-Bissau
  • Average visibility in September: 7km

The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are August and September (7km).

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