September weather forecast
Imbone, Guinea-Bissau

September

Weather in September

September, the first month of the autumn in Imbone, is a hot month, 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

On the advent of September, Imbone's average high-temperature exhibits a minor adjustment to a tropical 30.5°C (86.9°F) from August's 29.6°C (85.3°F). During the nights in September, Imbone experiences a consistent average temperature of 25°C (77°F).

Heat index

The heat index value for September is calculated to be a blistering 40°C (104°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the blend of air temperature and relative humidity to give a temperature impression. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In September, the average relative humidity is 81%.

Rainfall

In Imbone, during September, the rain falls for 20.7 days and regularly aggregates up to 132mm (5.2") of precipitation. In Imbone, during the entire year, the rain falls for 107.5 days and collects up to 726mm (28.58") of precipitation.

Daylight

The average length of the day in September in Imbone is 12h and 11min.
On the first day of the month, sunrise is at 06:54 and sunset at 19:14. On the last day of September, in Imbone, Guinea-Bissau, sunrise is at 06:53 and sunset at 18:55 GMT.

Sunshine

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 in Imbone, Guinea-Bissau, are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 7 during September morphs into the following directions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.

Frequently asked questions

How hot is September in Imbone?
An average high-temperature, in September, in Imbone, is 30.5°C (86.9°F) and the average low-temperature is 25°C (77°F). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 40°C (104°F).
What is the average humidity in September in Imbone?
The average relative humidity in September in Imbone, Guinea-Bissau, is 81%.
How many days does it rain in September in Imbone?
In Imbone, Guinea-Bissau, during September, the rain falls for 20.7 days and regularly aggregates up to 132mm (5.2") of precipitation.
What is the average length of the day in September in Imbone?
In September, the average day length in Imbone is 12h and 11min.
What time are sunrise and sunset in September in Imbone?
In September, on the first day of the month, sunrise is at 06:54 and sunset at 19:14. On the last day of the month, sunrise is at 06:53 and sunset at 18:55 GMT.
How many hours of sunshine does Imbone have in September?
In September, the average sunshine duration in Imbone is 7.5h.
What is the month with the highest UV index in Imbone?
The months with the highest UV index in Imbone, Guinea-Bissau, are January through December, with an average maximum UV index of 7.
What is the month with the lowest UV index in Imbone?
The months with the lowest UV index in Imbone are January through December, with an average maximum UV index of 7.
How high is the UV index in September in Imbone?
In Imbone, Guinea-Bissau, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.
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 - Imbone, Guinea-Bissau
Average temperature in September
Imbone, 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).

Average pressure in September - Imbone, Guinea-Bissau
Average pressure in September
Imbone, 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).

Average wind speed in September - Imbone, Guinea-Bissau
Average wind speed in September
Imbone, 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).

Average humidity in September - Imbone, Guinea-Bissau
Average humidity in September
Imbone, 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%).

Average rainfall in September - Imbone, Guinea-Bissau
Average rainfall in September
Imbone, 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).

Average rainfall days in September - Imbone, Guinea-Bissau
Average rainfall days in September
Imbone, 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).

Average daylight in September / Average sunshine in September - Imbone, Guinea-Bissau
Average daylight in September /
Average sunshine in September
Imbone, 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).

Average sunshine days in September - Imbone, Guinea-Bissau
Average sunshine days in September
Imbone, 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).

Average UV index in September - Imbone, Guinea-Bissau
Average UV index in September
Imbone, 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).

Average cloud cover in September - Imbone, Guinea-Bissau
Average cloud cover in September
Imbone, 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).

Average visibility in September - Imbone, Guinea-Bissau
Average visibility in September
Imbone, 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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