September weather forecastKoumbia, Guinea

September

Weather in September

September, the first month of the autumn in Koumbia, is a tropical month, with an average temperature fluctuating between 30°C (86°F) and 22.9°C (73.2°F).

Temperature

In September, Koumbia experiences a minor shift in meteorological conditions with average high-temperatures marked at a tropical 30°C (86°F), closely mirroring the climate in August. Koumbia records an average low-temperature of 22.9°C (73.2°F) throughout the month of September.

Heat index

In September, the average heat index is computed to be a blisteringly hot 40°C (104°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. 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.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In Koumbia, the average relative humidity in September is 88%.

Rainfall

In Koumbia, Guinea, in September, it is raining for 27.9 days, with typically 205mm (8.07") of accumulated precipitation. Throughout the year, there are 165.4 rainfall days, and 1099mm (43.27") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 11min.
On the first day of September, sunrise is at 06:43 and sunset at 19:03. On the last day of the month, sunrise is at 06:42 and sunset at 18:44 GMT.

Sunshine

The average sunshine in September is 6.3h.

UV index

January through May, September through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Updated: Jun 21, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Koumbia in September has an average high-temperature of 30°C (86°F) and an average low-temperature of 22.9°C (73.2°F). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in September is computed to be 40°C (104°F).

In Koumbia, the average relative humidity in September is 88%.

In Koumbia, in September, during 27.9 rainfall days, 205mm (8.07") of precipitation is typically accumulated.

In Koumbia, the average day length in September is 12h and 11min.

In September, on the first day of the month, sunrise is at 06:43 and sunset at 19:03. On the last day of the month, sunrise is at 06:42 and sunset at 18:44 GMT.

In Koumbia, the average sunshine duration in September is 6.3h.

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

In Koumbia, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

28.7°C

30°C

32.5°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

7.9km/h

6.1km/h

5.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

1.2

2.7

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Koumbia, Guinea

Average high temperature in September: 30°C

The warmest month (with the highest average high temperature) is March (39.3°C).
The month with the lowest average high temperature is August (28.7°C).

Average low temperature in September: 22.9°C

The month with the highest average low temperature is June (24.3°C).
The coldest month (with the lowest average low temperature) is February (18.8°C).

Average pressure in September
Koumbia, Guinea

Average pressure in September: 1012.7mbar

The month with the highest atmospheric pressure is July (1013.5mbar).
The months with the lowest atmospheric pressure are March and April (1010.3mbar).

Average wind speed in September
Koumbia, Guinea

Average wind speed in September: 5.7km/h

The windiest month (with the highest average wind speed) is May (8km/h).
The calmest month (with the lowest average wind speed) is November (4.5km/h).

Average humidity in September
Koumbia, Guinea

Average humidity in September: 88%

The month with the highest relative humidity is August (89%).
The month with the lowest relative humidity is January (44%).

Average rainfall in September
Koumbia, Guinea

Average rainfall in September: 205mm

The wettest month (with the highest rainfall) is August (367mm).
The driest months (with the least rainfall) are January and February (0mm).

Average rainfall days in September
Koumbia, Guinea

Average rainfall days in September: 27.9 days

The month with the highest number of rainy days is August (29.8 days).
The month with the least rainy days is January (0 days).

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

Average daylight in September: 12h and 12min

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: 6h and 18min

The months with the most sunshine are January, February and March (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 4h and 36min).

Average sunshine days in September
Koumbia, Guinea

Average sunshine days in September: 1.2 days

The month with the most sunshine days is January (30.5 days).
The month with the least sunshine days is August (1 days).

Average UV index in September
Koumbia, Guinea

Average UV index in September: 7

The months with the highest UV index are January, February, March, April, May, September, October, November and December (UV index 7).
The months with the lowest UV index are June, July and August (UV index 6).

Average cloud cover in September
Koumbia, Guinea

Average cloud cover in September: 60

The month with the most cloud cover is August (Cloud cover 72).
The months with the least cloud cover are February and March (Cloud cover 9).

Average visibility in September
Koumbia, Guinea

Average visibility in September: 7km

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