September weather forecastOmbima, Congo
September
Weather in September
The first month of the spring, September, is still a tropical month in Ombima, Congo, with an average temperature varying between 22.7°C (72.9°F) and 31.4°C (88.5°F).Temperature
With the onset of September, the average high-temperature stands at a still tropical 31.4°C (88.5°F), closely aligned with August's 32.9°C (91.2°F). Throughout the month of September, Ombima reports a steady low-temperature average of 22.7°C (72.9°F).Heat index
The average heat index in September is estimated at an extremely hot 40°C (104°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
In September, the average relative humidity is 73%.Rainfall
In Ombima, during September, the rain falls for 27.5 days and regularly aggregates up to 130mm (5.12") of precipitation. Throughout the year, there are 276.3 rainfall days, and 1248mm (49.13") of precipitation is accumulated.Daylight
In Ombima, the average length of the day in September is 12h and 6min.On the first day of the month, sunrise is at 05:54 and sunset at 17:58. On the last day of September, in Ombima, Congo, sunrise is at 05:42 and sunset at 17:50 WAT.
Sunshine
In Ombima, the average sunshine in September is 8.4h.UV index
With an average maximum UV index of 6, September is the month with the lowest UV index in Ombima. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ombima, Congo
- Average high temperature in September: 31.4°C
The warmest month (with the highest average high temperature) is July (33.3°C).
The month with the lowest average high temperature is November (30°C).
- Average low temperature in September: 22.7°C
The month with the highest average low temperature is August (23.5°C).
The coldest month (with the lowest average low temperature) is November (22.1°C).
Average pressure in September
Ombima, Congo
- Average pressure in September: 1011.6mbar
The month with the highest atmospheric pressure is June (1012.1mbar).
The month with the lowest atmospheric pressure is February (1009.3mbar).
Average wind speed in September
Ombima, Congo
- Average wind speed in September: 6.1km/h
The windiest month (with the highest average wind speed) is August (6.6km/h).
The calmest month (with the lowest average wind speed) is November (5.1km/h).
Average humidity in September
Ombima, Congo
- Average humidity in September: 73%
The months with the highest relative humidity are October and November (81%).
The month with the lowest relative humidity is July (57%).
Average rainfall in September
Ombima, Congo
- Average rainfall in September: 130mm
The wettest month (with the highest rainfall) is October (216mm).
The driest month (with the least rainfall) is July (21mm).
Average rainfall days in September
Ombima, Congo
- Average rainfall days in September: 27.5 days
The month with the highest number of rainy days is October (30.3 days).
The month with the least rainy days is July (13.2 days).
Average daylight in September /
Average sunshine in September
Ombima, 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 24min
The month with the most sunshine is January (Average sunshine: 10h and 18min).
The month with the least sunshine is October (Average sunshine: 7h and 36min).
Average sunshine days in September
Ombima, Congo
- Average sunshine days in September: 1.4 days
The month with the most sunshine days is July (15.9 days).
The month with the least sunshine days is October (0.4 days).
Average UV index in September
Ombima, 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
Ombima, Congo
- Average cloud cover in September: 40
The month with the most cloud cover is October (Cloud cover 47).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility in September
Ombima, Congo
- Average visibility in September: 9km
The months with the highest visibility are February, June, July and August (10km).
The months with the lowest visibility are October and November (8km).





