September weather forecast
Koumana, Guinea

September, the first month of the autumn in Koumana, is still a warm month, with an average temperature ranging between min 20.8°C (69.4°F) and max 29.3°C (84.7°F).

Temperature

The onset of September notes an average high-temperature of a still warm 29.3°C (84.7°F), subtly shifted from August's 28.3°C (82.9°F). During the September nights, an average temperature of 20.8°C (69.4°F) is observed in Koumana.

Heat index

Throughout September, the heat index is evaluated at a fiery hot 37°C (98.6°F). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

The average relative humidity in September is 87%.

Rainfall

In Koumana, in September, it is raining for 25.8 days, with typically 126mm (4.96") of accumulated precipitation. In Koumana, during the entire year, the rain falls for 154.5 days and collects up to 814mm (32.05") of precipitation.

Daylight

In Koumana, the average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 06:28 and sunset at 18:48. On the last day of September, in Koumana, sunrise is at 06:27 and sunset at 18:29 GMT.

Sunshine

In September, the average sunshine in Koumana is 7.8h.

UV index

July through September and December, with an average maximum UV index of 6, are months with the lowest UV index in Koumana. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.