September weather forecast
Okoyo, Congo

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.