September weather forecastKokolo, Gabon
September
Weather in September
September, the first month of the spring in Kokolo, is still a hot month, with an average temperature fluctuating between 30.5°C (86.9°F) and 21.5°C (70.7°F).Temperature
Kokolo greets September with an average high-temperature of a still hot 30.5°C (86.9°F), marking a slight deviation from the preceding month. In September, Kokolo reports a consistent average low-temperature of 21.5°C (70.7°F) during the nights.Heat index
The heat index value for September is calculated to be a fiery hot 39°C (102.2°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Remember that heat index calculations are made for conditions in the shade with light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. 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. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
In September, the average relative humidity is 78%.Rainfall
In Kokolo, in September, during 22.6 rainfall days, 84mm (3.31") of precipitation is typically accumulated. Throughout the year, in Kokolo, there are 297.6 rainfall days, and 1831mm (72.09") of precipitation is accumulated.Daylight
In Kokolo, Gabon, the average length of the day in September is 12h and 6min.On the first day of the month, sunrise is at 06:14 and sunset at 18:19. On the last day of September, in Kokolo, sunrise is at 06:03 and sunset at 18:10 WAT.
Sunshine
With an average of 5.3h of sunshine, September has the least sunshine of the year.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Kokolo, Gabon
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is October (29.9°C).
- Average low temperature in September: 21.5°C
The month with the highest average low temperature is March (22.2°C).
The coldest month (with the lowest average low temperature) is July (19.7°C).
Average pressure in September
Kokolo, Gabon
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is July (1014.2mbar).
The months with the lowest atmospheric pressure are February and March (1010.3mbar).
Average wind speed in September
Kokolo, Gabon
- Average wind speed in September: 5.5km/h
The windiest month (with the highest average wind speed) is August (6km/h).
The calmest month (with the lowest average wind speed) is December (3.8km/h).
Average humidity in September
Kokolo, Gabon
- Average humidity in September: 78%
The month with the highest relative humidity is November (89%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
Kokolo, Gabon
- Average rainfall in September: 84mm
The wettest month (with the highest rainfall) is October (275mm).
The driest month (with the least rainfall) is July (13mm).
Average rainfall days in September
Kokolo, Gabon
- Average rainfall days in September: 22.6 days
The month with the highest number of rainy days is December (30.4 days).
The month with the least rainy days is July (10.3 days).
Average daylight in September /
Average sunshine in September
Kokolo, Gabon
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 0min).
- Average sunshine in September: 5h and 18min
The month with the most sunshine is January (Average sunshine: 7h and 24min).
The month with the least sunshine is September (Average sunshine: 5h and 18min).
Average sunshine days in September
Kokolo, Gabon
- Average sunshine days in September: 3.7 days
The month with the most sunshine days is July (15 days).
The month with the least sunshine days is October (0.4 days).
Average UV index in September
Kokolo, Gabon
- Average UV index in September: 6
The month with the highest UV index is March (UV index 7).
The month with the lowest UV index is October (UV index 5).
Average cloud cover in September
Kokolo, Gabon
- Average cloud cover in September: 70
The month with the most cloud cover is October (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 54).
Average visibility in September
Kokolo, Gabon
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The month with the lowest visibility is November (5km).





