September weather forecast
Abu, Guinea-Bissau

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Weather in September

The first month of the autumn, September, is a tropical month in Abu, Guinea-Bissau, with temperature in the range of an average low of 25°C (77°F) and an average high of 30.5°C (86.9°F).

Temperature

Abu, Guinea-Bissau, notes an average high-temperature of a tropical 30.5°C (86.9°F) in September, displaying minor variation from August. Throughout September, an average nighttime temperature of 25°C (77°F) is experienced in Abu.

Heat index

During September, the heat index is evaluated at a blisteringly hot 40°C (104°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Observations indicate that the heat index values are for shady locations 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 'real feel' or 'feels like', is an estimation of the warmth sensation when considering humidity levels. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in September is 81%.

Rainfall

In Abu, in September, it is raining for 20.7 days, with typically 132mm (5.2") of accumulated precipitation. Throughout the year, there are 107.5 rainfall days, and 726mm (28.58") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of September, sunrise is at 06:53 and sunset at 19:13. On the last day of the month, sunrise is at 06:52 and sunset at 18:54 GMT.

Sunshine

In Abu, the average sunshine in September is 7.5h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during September leads to these instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
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Frequently asked questions

How hot is it in Abu in September?

The high-temperature, in September, in Abu, records 30.5°C (86.9°F), while the low-temperature is 25°C (77°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 40°C (104°F).

What is the average humidity in September in Abu?

In September, the average relative humidity in Abu, Guinea-Bissau, is 81%.

How much does it rain in Abu in September?

In Abu, Guinea-Bissau, in September, it is raining for 20.7 days, with typically 132mm (5.2") of accumulated precipitation.

How many hours of daylight does Abu have in September?

In Abu, Guinea-Bissau, the average day length in September is 12h and 11min.

When is the sunrise / sunset in September in Abu?

On the first day of September in Abu, sunrise is at 06:53 and sunset at 19:13. On the last day of the month, sunrise is at 06:52 and sunset at 18:54 GMT.

How many hours of sunshine does Abu have in September?

In Abu, the average sunshine duration in September is 7.5h.

What are the months with the highest UV index in Abu?

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

When is the lowest UV index in Abu?

The months with the lowest UV index in Abu, Guinea-Bissau, are January through December, with an average maximum UV index of 7.

How high is the UV index in September in Abu?

In September, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.

Average temperature in September
Abu, Guinea-Bissau

Average temperature in September - Abu, Guinea-Bissau
  • Average high temperature in September: 30.5°C

The warmest month (with the highest average high temperature) is March (35.5°C).
The month with the lowest average high temperature is August (29.6°C).

  • Average low temperature in September: 25°C

The month with the highest average low temperature is June (26°C).
The coldest month (with the lowest average low temperature) is January (21.8°C).

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Average pressure in September
Abu, Guinea-Bissau

Average pressure in September - Abu, Guinea-Bissau
  • Average pressure in September: 1012.2mbar

The month with the highest atmospheric pressure is July (1012.9mbar).
The months with the lowest atmospheric pressure are March and April (1010.1mbar).

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Average wind speed in September
Abu, Guinea-Bissau

Average wind speed in September - Abu, Guinea-Bissau
  • Average wind speed in September: 9.7km/h

The windiest month (with the highest average wind speed) is June (13.2km/h).
The calmest months (with the lowest average wind speed) are October and November (9km/h).

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Average humidity in September
Abu, Guinea-Bissau

Average humidity in September - Abu, Guinea-Bissau
  • Average humidity in September: 81%

The month with the highest relative humidity is August (82%).
The month with the lowest relative humidity is January (32%).

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Average rainfall in September
Abu, Guinea-Bissau

Average rainfall in September - Abu, Guinea-Bissau
  • Average rainfall in September: 132mm

The wettest month (with the highest rainfall) is August (270mm).
The driest months (with the least rainfall) are January and February (0mm).

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Average rainfall days in September
Abu, Guinea-Bissau

Average rainfall days in September - Abu, Guinea-Bissau
  • Average rainfall days in September: 20.7 days

The month with the highest number of rainy days is August (26.9 days).
The month with the least rainy days is January (0.3 days).

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Average daylight in September /
Average sunshine in September
Abu, Guinea-Bissau

Average daylight in September / Average sunshine in September - Abu, 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 30min).

  • Average sunshine in September: 7h and 3min

The months with the most sunshine are March, April and May (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 6min).

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Average sunshine days in September
Abu, Guinea-Bissau

Average sunshine days in September - Abu, Guinea-Bissau
  • Average sunshine days in September: 8 days

The month with the most sunshine days is January (30.7 days).
The month with the least sunshine days is August (2.9 days).

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Average UV index in September
Abu, Guinea-Bissau

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

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

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Average cloud cover in September
Abu, Guinea-Bissau

Average cloud cover in September - Abu, Guinea-Bissau
  • Average cloud cover in September: 46

The month with the most cloud cover is August (Cloud cover 57).
The months with the least cloud cover are March and April (Cloud cover 7).

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Average visibility in September
Abu, Guinea-Bissau

Average visibility in September - Abu, Guinea-Bissau
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (10km).
The months with the lowest visibility are July and August (9km).

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Abu, Guinea-Bissau

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