September weather forecast
Yonon, Congo

September

Weather in September

September, the first month of the spring in Yonon, is also a moderately hot month, with temperature in the range of an average low of 21.4°C (70.5°F) and an average high of 29.8°C (85.6°F).

Temperature

The average high-temperature in September, at a warm 29.8°C (85.6°F), reveals a modest deviation from August's 30.8°C (87.4°F). In September, Yonon experiences a temperature dip to an average of 21.4°C (70.5°F) at night.

Heat index

The heat index in September is appraised at a sweltering 35°C (95°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Yonon, the average relative humidity in September is 73%.

Rainfall

In Yonon, in September, during 25.8 rainfall days, 116mm (4.57") of precipitation is typically accumulated. Throughout the year, there are 269.7 rainfall days, and 1470mm (57.87") of precipitation is accumulated.

Daylight

In Yonon, the average length of the day in September is 12h and 6min.
On the first day of September in Yonon, Congo, sunrise is at 05:57 and sunset at 18:01. On the last day of the month, sunrise is at 05:45 and sunset at 17:53 WAT.

Sunshine

The average sunshine in September is 8.2h.

UV index

February, March, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 6 during September translates into the following directions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Enhance your sun protection with tightly woven, yet airy clothing.

Frequently asked questions

How hot is September?
During September, Yonon experiences an average high-temperature of 29.8°C (85.6°F) and a low-temperature of 21.4°C (70.5°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is appraised at 35°C (95°F).
What is the average humidity in September?
The average relative humidity in September is 73%.
How much does it rain in Yonon in September?
In Yonon, in September, it is raining for 25.8 days, with typically 116mm (4.57") of accumulated precipitation.
How many hours of daylight does Yonon have in September?
The average day length in September is 12h and 6min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 05:57 and sunset at 18:01. On the last day of the month, sunrise is at 05:45 and sunset at 17:53 WAT.
How many hours of sunshine does Yonon have in September?
The average sunshine duration in September is 8.2h.
When is the lowest UV index?
The months with the lowest UV index are February, March, May, June, August through December, with an average maximum UV index of 6.
What is the UV index reading in September?
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Yonon, Congo
Average temperature in September
Yonon, Congo
  • Average high temperature in September: 29.8°C

The warmest months (with the highest average high temperature) are July and August (30.8°C).
The month with the lowest average high temperature is November (27.9°C).

  • Average low temperature in September: 21.4°C

The months with the highest average low temperature are February and March (21.8°C).
The coldest months (with the lowest average low temperature) are June, November and December (20.8°C).

Average pressure in September - Yonon, Congo
Average pressure in September
Yonon, Congo
  • Average pressure in September: 1012.1mbar

The month with the highest atmospheric pressure is June (1012.9mbar).
The month with the lowest atmospheric pressure is February (1010.1mbar).

Average wind speed in September - Yonon, Congo
Average wind speed in September
Yonon, Congo
  • Average wind speed in September: 7.4km/h

The windiest month (with the highest average wind speed) is August (8.3km/h).
The calmest month (with the lowest average wind speed) is December (5.7km/h).

Average humidity in September - Yonon, Congo
Average humidity in September
Yonon, Congo
  • Average humidity in September: 73%

The month with the highest relative humidity is November (85%).
The month with the lowest relative humidity is July (60%).

Average rainfall in September - Yonon, Congo
Average rainfall in September
Yonon, Congo
  • Average rainfall in September: 116mm

The wettest month (with the highest rainfall) is November (226mm).
The driest month (with the least rainfall) is July (14mm).

Average rainfall days in September - Yonon, Congo
Average rainfall days in September
Yonon, Congo
  • Average rainfall days in September: 25.8 days

The month with the highest number of rainy days is October (28.5 days).
The month with the least rainy days is July (9.3 days).

Average daylight in September / Average sunshine in September - Yonon, Congo
Average daylight in September /
Average sunshine in September
Yonon, Congo
  • Average daylight in September: 12h and 1min

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 1min

The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is October (Average sunshine: 6h and 6min).

Average sunshine days in September - Yonon, Congo
Average sunshine days in September
Yonon, Congo
  • Average sunshine days in September: 2.9 days

The month with the most sunshine days is July (19.4 days).
The month with the least sunshine days is October (1.9 days).

Average UV index in September - Yonon, Congo
Average UV index in September
Yonon, Congo
  • Average UV index in September: 6

The months with the highest UV index are January, April and July (UV index 7).
The months with the lowest UV index are February, March, May, June, August, September, October, November and December (UV index 6).

Average cloud cover in September - Yonon, Congo
Average cloud cover in September
Yonon, Congo
  • Average cloud cover in September: 46

The month with the most cloud cover is October (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in September - Yonon, Congo
Average visibility in September
Yonon, Congo
  • Average visibility in September: 9km

The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are October, November and December (8km).

englishespañol中文
Share