September weather forecast
Issac, Gabon

The first month of the spring, September, is also a hot month in Issac, Gabon, with temperature in the range of an average high of 30.7°C (87.3°F) and an average low of 22.2°C (72°F).

Temperature

In September, Issac notes an average high-temperature of a still hot 30.7°C (87.3°F), maintaining the same climate as the preceding month. During the month of September, the temperature generally drops to a low average of 22.2°C (72°F).

Heat index

September's heat index is evaluated at a blistering 40°C (104°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.
For clarity, heat index numbers account for light winds and areas under shade. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gauges the sensation of temperature factoring in the air's moisture content. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In Issac, the average relative humidity in September is 80%.

Rainfall

In Issac, in September, it is raining for 19.2 days, with typically 62mm (2.44") of accumulated precipitation. In Issac, during the entire year, the rain falls for 263 days and collects up to 1311mm (51.61") of precipitation.

Daylight

The average length of the day in September is 12h and 7min.
On the first day of September in Issac, sunrise is at 06:17 and sunset at 18:23. On the last day of the month, sunrise is at 06:06 and sunset at 18:13 WAT.

Sunshine

With an average of 5.2h of sunshine, September has the least sunshine of the year.

UV index

The months with the lowest UV index in Issac are March, May through November, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 6 during September translates into the following directions:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. 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. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.