September weather forecast
Mandiana, Guinea

With the arrival of September, rainfall in Mandiana starts to dwindle, dropping to 126mm (4.96"). However, temperatures begin to rise slightly, hitting highs of 29.3°C (84.7°F) during the day time. Winds remain light, averaging around 5.3km/h (3.3mph) during the month. Moreover, daylight hours begin to slight decrease, matching the gradual transition from the wet season. The weather becomes more balanced, setting in transition from the rainy period to the dry season.

Temperature

September brings an average high-temperature of a still warm 29.3°C (84.7°F), showing a slight difference from August's 28.3°C (82.9°F). In Mandiana, the average nighttime temperature during September is a pleasant 20.8°C (69.4°F).

Heat index

For most parts of September, the heat index is computed to be a fiery hot 37°C (98.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In September, the average relative humidity is 87%.

Rainfall

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

Daylight

In Mandiana, the average length of the day in September is 12h and 11min.
On the first day of the month, sunrise is at 06:25 and sunset at 18:44. On the last day of September, sunrise is at 06:23 and sunset at 18:25 GMT.

Sunshine

In September, the average sunshine is 7.8h.

UV index

The months with the lowest UV index are July through September and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In September, a daily UV index of 6 turns into the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. 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. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.