September weather forecast
Koundara, Guinea

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Weather in September

September in Koundara sees a gradual easing of the monsoons as the rainfall declines. Nevertheless, the city remains outfitted in monsoon attire with typical high humidity. The cloud cover begins to lighten, welcoming back the tropical sun. Temperatures observe a slight increase, ranging between 22.5°C (72.5°F) and 31.9°C (89.4°F). The rainfall reduces by a large margin to 139mm (5.47"), signaling the close of the rainy season.

Temperature

Entering September, the average high-temperature is recorded at a still tropical 31.9°C (89.4°F), exhibiting a minimal shift from August's 31.2°C (88.2°F). September brings with it a nighttime average temperature of 22.5°C (72.5°F) in Koundara.

Heat index

September's average heat index is estimated at a burning hot 45°C (113°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. 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. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in September in Koundara, Guinea, is 82%.

Rainfall

In Koundara, Guinea, in September, during 24.5 rainfall days, 139mm (5.47") of precipitation is typically accumulated. In Koundara, during the entire year, the rain falls for 115.7 days and collects up to 635mm (25") of precipitation.

Daylight

The average length of the day in September in Koundara is 12h and 12min.
On the first day of September in Koundara, sunrise is at 06:42 and sunset at 19:03. On the last day of the month, sunrise is at 06:42 and sunset at 18:43 GMT.

Sunshine

The average sunshine in September is 8.6h.

UV index

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index, 7 during September, leads to the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.
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Frequently asked questions

How hot is September in Koundara?

September temperatures vary between a high-temperature of 31.9°C (89.4°F) and a low-temperature of 22.5°C (72.5°F). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in September is estimated at 45°C (113°F).

What is the average humidity in September in Koundara?

The average relative humidity in September is 82%.

How many days does it rain in September in Koundara?

In Koundara, in September, during 24.5 rainfall days, 139mm (5.47") of precipitation is typically accumulated.

What is the average length of the day in September in Koundara?

In Koundara, the average day length in September is 12h and 12min.

What time are sunrise and sunset in September in Koundara?

On the first day of September in Koundara, sunrise is at 06:42 and sunset at 19:03. On the last day of the month, sunrise is at 06:42 and sunset at 18:43 GMT.

How many hours of sunshine does Koundara have in September?

The average sunshine duration in September in Koundara is 8.6h.

How high is the UV index in September in Koundara?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.

Average temperature in September
Koundara, Guinea

Average temperature in September - Koundara, Guinea
  • Average high temperature in September: 31.9°C

The warmest month (with the highest average high temperature) is April (41.6°C).
The month with the lowest average high temperature is August (31.2°C).

  • Average low temperature in September: 22.5°C

The month with the highest average low temperature is May (26.9°C).
The coldest month (with the lowest average low temperature) is January (19.1°C).

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Average pressure in September
Koundara, Guinea

Average pressure in September - Koundara, Guinea
  • Average pressure in September: 1012.5mbar

The months with the highest atmospheric pressure are July and August (1012.7mbar).
The month with the lowest atmospheric pressure is April (1009mbar).

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Average wind speed in September
Koundara, Guinea

Average wind speed in September - Koundara, Guinea
  • Average wind speed in September: 5.2km/h

The windiest month (with the highest average wind speed) is May (9.3km/h).
The calmest month (with the lowest average wind speed) is November (5km/h).

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Average humidity in September
Koundara, Guinea

Average humidity in September - Koundara, Guinea
  • Average humidity in September: 82%

The month with the highest relative humidity is August (83%).
The months with the lowest relative humidity are January and February (16%).

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Average rainfall in September
Koundara, Guinea

Average rainfall in September - Koundara, Guinea
  • Average rainfall in September: 139mm

The wettest month (with the highest rainfall) is August (197mm).
The driest months (with the least rainfall) are January and December (0mm).

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Average rainfall days in September
Koundara, Guinea

Average rainfall days in September - Koundara, Guinea
  • Average rainfall days in September: 24.5 days

The month with the highest number of rainy days is August (26.5 days).
The month with the least rainy days is January (0.2 days).

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Average daylight in September /
Average sunshine in September
Koundara, Guinea

Average daylight in September / Average sunshine in September - Koundara, Guinea
  • 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: 8h and 4min

The month with the most sunshine is March (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 7h and 30min).

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Average sunshine days in September
Koundara, Guinea

Average sunshine days in September - Koundara, Guinea
  • Average sunshine days in September: 4.2 days

The months with the most sunshine days are January and December (30.8 days).
The month with the least sunshine days is August (3.3 days).

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Average UV index in September
Koundara, Guinea

Average UV index in September - Koundara, Guinea
  • Average UV index in September: 7

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

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Average cloud cover in September
Koundara, Guinea

Average cloud cover in September - Koundara, Guinea
  • Average cloud cover in September: 36

The month with the most cloud cover is August (Cloud cover 48).
The month with the least cloud cover is March (Cloud cover 6).

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Average visibility in September
Koundara, Guinea

Average visibility in September - Koundara, Guinea
  • Average visibility in September: 8km

The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are August and September (8km).

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Koundara, Guinea

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