September weather forecast
Okoyo, Congo

Weather in September

September, the first month of the spring in Okoyo, is still a tropical month, with temperature in the range of an average low of 22.7°C (72.9°F) and an average high of 31.4°C (88.5°F).

Temperature

In Okoyo, the average high-temperature in September is almost the same as in August - a still tropical 31.4°C (88.5°F). The average low-temperature, is 22.7°C (72.9°F).

Heat index

The average heat index in September is calculated to be a scorching 40°C (104°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like wind, metabolic differences, differences in body mass, height, and shape, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. 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. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in September is 73%.

Rainfall

In Okoyo, it is raining for 27.5 days, with typically 130mm (5.12") of accumulated precipitation. In Okoyo, during the entire year, the rain falls for 276.3 days and collects up to 1248mm (49.13") of precipitation.

Daylight

In September, the average length of the day is 12h and 6min.
On the first day of the month, sunrise is at 05:57 and sunset at 18:02. On the last day of September, in Okoyo, Congo, sunrise is at 05:46 and sunset at 17:53 WAT.

Sunshine

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. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Okoyo?

In Okoyo, Congo, in September, the average high-temperature is 31.4°C (88.5°F), and the average low-temperature is 22.7°C (72.9°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is calculated to be 40°C (104°F).

What is the average humidity in September in Okoyo?

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

How much does it rain in Okoyo in September?

In September, in Okoyo, the rain falls for 27.5 days. Throughout September, 130mm (5.12") of precipitation is accumulated.

How many hours of daylight does Okoyo have in September?

In September, the average day length in Okoyo, Congo, is 12h and 6min.

What time are sunrise and sunset in September in Okoyo?

On the first day of September in Okoyo, Congo, sunrise is at 05:57 and sunset at 18:02. On the last day of the month, sunrise is at 05:46 and sunset at 17:53 WAT.

How many hours of sunshine does Okoyo have in September?

In Okoyo, the average sunshine duration in September is 8.4h.

When is the lowest UV index in Okoyo?

With an average maximum UV index of 6, September is the month with the lowest UV index in Okoyo, Congo.

What is the UV index intensity in September in Okoyo?

In September, the average daily maximum UV index in Okoyo is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Average temperature in September
Okoyo, Congo

Average temperature in September - Okoyo, 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).

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Average pressure in September
Okoyo, Congo

Average pressure in September - Okoyo, 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).

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Average wind speed in September
Okoyo, Congo

Average wind speed in September - Okoyo, 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).

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Average humidity in September
Okoyo, Congo

Average humidity in September - Okoyo, 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%).

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Average rainfall in September
Okoyo, Congo

Average rainfall in September - Okoyo, 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).

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Average rainfall days in September
Okoyo, Congo

Average rainfall days in September - Okoyo, 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).

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Average daylight in September /
Average sunshine in September
Okoyo, Congo

Average daylight in September / Average sunshine in September - Okoyo, Congo
  • Average daylight in September: 12h and 6min

The month with the longest days is December (Average daylight: 12h and 13min).
The month with the shortest days is June (Average daylight: 12h and 2min).

  • 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).

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Average sunshine days in September
Okoyo, Congo

Average sunshine days in September - Okoyo, 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).

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Average UV index in September
Okoyo, Congo

Average UV index in September - Okoyo, 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).

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Average cloud cover in September
Okoyo, Congo

Average cloud cover in September - Okoyo, 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).

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Average visibility in September
Okoyo, Congo

Average visibility in September - Okoyo, 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).

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