September weather forecast
Sélouma, Guinea

September

Weather in September

September, the first month of the autumn in Sélouma, is still a warm month, with temperature in the range of an average low of 20.3°C (68.5°F) and an average high of 28.7°C (83.7°F).

Temperature

The advent of September denotes an average high-temperature of a still moderately hot 28.7°C (83.7°F), subtly different from August's 27.3°C (81.1°F). An average low-temperature of 20.3°C (68.5°F) is anticipated throughout the nights during September.

Heat index

The heat index value for September is calculated to be a sweltering 36°C (96.8°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', reflects the feeling of heat when considering both air temperature and humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled 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. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

In September, the average relative humidity in Sélouma is 89%.

Rainfall

In Sélouma, during September, the rain falls for 28.6 days and regularly aggregates up to 171mm (6.73") of precipitation. Throughout the year, there are 177.5 rainfall days, and 968mm (38.11") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 11min.
On the first day of the month, sunrise is at 06:33 and sunset at 18:53. On the last day of September, in Sélouma, sunrise is at 06:32 and sunset at 18:34 GMT.

Sunshine

In September, the average sunshine is 6.9h.

UV index

In Sélouma, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum UV index of 6 in September translates into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.

Frequently asked questions

Is it hot during September?
In Sélouma, 28.7°C (83.7°F) is the average high-temperature and 20.3°C (68.5°F) is the average low-temperature during September. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in September is calculated to be 36°C (96.8°F).
What is the average humidity in September?
In September, the average relative humidity is 89%.
How many days does it rain in September in Sélouma?
In Sélouma, during September, the rain falls for 28.6 days and regularly aggregates up to 171mm (6.73") of precipitation.
What is the average length of the day in September?
In September, the average day length is 12h and 11min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 06:33 and sunset at 18:53. On the last day of the month, sunrise is at 06:32 and sunset at 18:34 GMT.
How long on average sun shines in September?
In Sélouma, the average sunshine duration in September is 6.9h.
How high is the UV index in September?
In Sélouma, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to 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
Sélouma, Guinea
  • Average high temperature in September: 28.7°C

The warmest month (with the highest average high temperature) is March (38.9°C).
The month with the lowest average high temperature is August (27.3°C).

  • Average low temperature in September: 20.3°C

The month with the highest average low temperature is April (23.1°C).
The coldest month (with the lowest average low temperature) is December (17.2°C).

Average pressure in September
Sélouma, Guinea
  • Average pressure in September: 1013.4mbar

The month with the highest atmospheric pressure is July (1014.1mbar).
The month with the lowest atmospheric pressure is April (1010.2mbar).

Average wind speed in September
Sélouma, Guinea
  • Average wind speed in September: 5.4km/h

The windiest month (with the highest average wind speed) is May (7.9km/h).
The calmest months (with the lowest average wind speed) are October and November (4.8km/h).

Average humidity in September
Sélouma, Guinea
  • Average humidity in September: 89%

The month with the highest relative humidity is August (91%).
The month with the lowest relative humidity is January (25%).

Average rainfall in September
Sélouma, Guinea
  • Average rainfall in September: 171mm

The wettest month (with the highest rainfall) is August (228mm).
The driest month (with the least rainfall) is December (0mm).

Average rainfall days in September
Sélouma, Guinea
  • Average rainfall days in September: 28.6 days

The month with the highest number of rainy days is September (28.6 days).
The month with the least rainy days is December (0.4 days).

Average daylight in September /
Average sunshine in September
Sélouma, 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 30min).

  • Average sunshine in September: 6h and 5min

The month with the most sunshine is February (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 5h and 12min).

Average sunshine days in September
Sélouma, Guinea
  • Average sunshine days in September: 0.9 days

The month with the most sunshine days is December (30.4 days).
The month with the least sunshine days is September (0.9 days).

Average UV index in September
Sélouma, Guinea
  • Average UV index in September: 6

The months with the highest UV index are January, February, March, April and May (UV index 7).
The months with the lowest UV index are July and August (UV index 5).

Average cloud cover in September
Sélouma, Guinea
  • Average cloud cover in September: 63

The month with the most cloud cover is August (Cloud cover 77).
The month with the least cloud cover is December (Cloud cover 8).

Average visibility in September
Sélouma, Guinea
  • Average visibility in September: 6km

The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are July, August and September (6km).

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