September weather forecast
Sam, Gabon

The first month of the autumn, September, is still a warm month in Sam, Gabon, with an average temperature varying between 20.7°C (69.3°F) and 29.1°C (84.4°F).

Temperature

The average high-temperature in September, at a still warm 29.1°C (84.4°F), reveals a modest deviation from August's 29.5°C (85.1°F). During the month of September, the temperature generally drops to a low average of 20.7°C (69.3°F).

Heat index

Throughout September, the heat index is calculated to be a sweltering 37°C (98.6°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
In reference to the heat index, it's for places in shade and with a slight wind. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in September is 87%.

Rainfall

In Sam, in September, during 26.1 rainfall days, 146mm (5.75") of precipitation is typically accumulated. Throughout the year, there are 313.6 rainfall days, and 1610mm (63.39") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 7min.
On the first day of September, sunrise is at 06:10 and sunset at 18:18. On the last day of the month, sunrise is at 06:01 and sunset at 18:08 WAT.

Sunshine

The average sunshine in September in Sam is 5.5h.

UV index

September and October, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.