September weather forecastEtsouali, Congo
September
Weather in September
September in Etsouali, Congo marks an unambiguous shift from the dry season to a wetter regime. The transitional September climate brings on a rainfall record 109mm (4.29"), doubling that of August. With the atmosphere awash with humidity, the climate starts to favor flora and fauna, preparing them for the forthcoming intense wet season. Growing cloud cover, indicative of the impending rainy season, cloaks the city, reducing sunshine hours. Transitioning into the cooler October, anticipate higher rainfall but cooler temperatures.Temperature
The shift into September uncovers an average high-temperature of a still tropical 32.5°C (90.5°F), subtly different from the previous month. An average low-temperature of 22.7°C (72.9°F) is observed during September nights in Etsouali.Heat index
September's mean heat index is calculated to be an extremely hot 42°C (107.6°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.Heat index values are typically calculated for conditions of shade and a light breeze. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In September, the average relative humidity is 70%.Rainfall
In September, in Etsouali, the rain falls for 27.1 days. Throughout September, 109mm (4.29") of precipitation is accumulated. In Etsouali, during the entire year, the rain falls for 277.8 days and collects up to 1195mm (47.05") of precipitation.Daylight
In Etsouali, the average length of the day in September is 12h and 6min.On the first day of September in Etsouali, sunrise is at 05:55 and sunset at 17:59. On the last day of the month, sunrise is at 05:43 and sunset at 17:51 WAT.
Sunshine
The average sunshine in September in Etsouali is 8.7h.UV index
September is the month with the lowest UV index in Etsouali, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily UV index of 6 turns into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Etsouali, Congo
- Average high temperature in September: 32.5°C
The warmest month (with the highest average high temperature) is August (34.2°C).
The month with the lowest average high temperature is November (30.3°C).
- Average low temperature in September: 22.7°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is November (21.6°C).
Average pressure in September
Etsouali, Congo
- Average pressure in September: 1011.3mbar
The month with the highest atmospheric pressure is June (1012mbar).
The month with the lowest atmospheric pressure is February (1009.4mbar).
Average wind speed in September
Etsouali, Congo
- Average wind speed in September: 6km/h
The windiest month (with the highest average wind speed) is August (6.4km/h).
The calmest month (with the lowest average wind speed) is November (4.9km/h).
Average humidity in September
Etsouali, Congo
- Average humidity in September: 70%
The month with the highest relative humidity is November (81%).
The month with the lowest relative humidity is July (53%).
Average rainfall in September
Etsouali, Congo
- Average rainfall in September: 109mm
The wettest month (with the highest rainfall) is October (193mm).
The driest month (with the least rainfall) is July (12mm).
Average rainfall days in September
Etsouali, Congo
- Average rainfall days in September: 27.1 days
The month with the highest number of rainy days is October (29.6 days).
The month with the least rainy days is July (8.3 days).
Average daylight in September /
Average sunshine in September
Etsouali, Congo
- Average daylight in September: 12h and 6min
The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 12h and 0min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is January (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 7h and 48min).
Average sunshine days in September
Etsouali, Congo
- Average sunshine days in September: 2.3 days
The month with the most sunshine days is July (20.1 days).
The month with the least sunshine days is October (0.7 days).
Average UV index in September
Etsouali, Congo
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 7).
The month with the lowest UV index is September (UV index 6).
Average cloud cover in September
Etsouali, Congo
- Average cloud cover in September: 37
The month with the most cloud cover is November (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 23).
Average visibility in September
Etsouali, Congo
- Average visibility in September: 9km
The months with the highest visibility are June, July and August (10km).
The month with the lowest visibility is November (8km).








