September weather forecast
Oyou, Gabon

September

Weather in September

The first month of the spring, September, is still a tropical month in Oyou, Gabon, with an average temperature fluctuating between 21.3°C (70.3°F) and 30.1°C (86.2°F).

Temperature

On the advent of September, Oyou's average high-temperature exhibits a minor adjustment to a still hot 30.1°C (86.2°F) from August's 31.7°C (89.1°F). Oyou experiences an average low-temperature of 21.3°C (70.3°F) in the month of September.

Heat index

In September, the average heat index is appraised at a torrid 38°C (100.4°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In Oyou, Gabon, the average relative humidity in September is 81%.

Rainfall

In Oyou, in September, it is raining for 26.1 days, with typically 144mm (5.67") of accumulated precipitation. In Oyou, during the entire year, the rain falls for 293.4 days and collects up to 1534mm (60.39") of precipitation.

Daylight

In Oyou, the average length of the day in September is 12h and 7min.
On the first day of September, sunrise is at 06:02 and sunset at 18:07. On the last day of the month, sunrise is at 05:51 and sunset at 17:58 WAT.

Sunshine

In Oyou, Gabon, the average sunshine in September is 8.1h.

UV index

In Oyou, Gabon, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 6 in September translates into this advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Frequently asked questions

How hot is it in Oyou in September?
During September, Oyou experiences an average high-temperature of 30.1°C (86.2°F) and a low-temperature of 21.3°C (70.3°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in September is appraised at 38°C (100.4°F).
What is the average humidity in September in Oyou?
In Oyou, the average relative humidity in September is 81%.
How many days does it rain in September in Oyou?
In Oyou, during September, the rain falls for 26.1 days and regularly aggregates up to 144mm (5.67") of precipitation.
How many hours of daylight does Oyou have in September?
In Oyou, Gabon, the average day length in September is 12h and 7min.
When are sunrise and sunset in September in Oyou?
In September, on the first day of the month, sunrise is at 06:02 and sunset at 18:07. On the last day of the month, in Oyou, sunrise is at 05:51 and sunset at 17:58 WAT.
How long on average sun shines in September in Oyou?
In September, the average sunshine duration in Oyou, Gabon, is 8.1h.
What is the UV index reading in September in Oyou?
In Oyou, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to 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
Oyou, Gabon
  • Average high temperature in September: 30.1°C

The warmest months (with the highest average high temperature) are February and March (32.1°C).
The month with the lowest average high temperature is October (28.9°C).

  • Average low temperature in September: 21.3°C

The month with the highest average low temperature is March (22.1°C).
The coldest month (with the lowest average low temperature) is July (20.9°C).

Average pressure in September
Oyou, Gabon
  • Average pressure in September: 1012.6mbar

The month with the highest atmospheric pressure is July (1013.3mbar).
The month with the lowest atmospheric pressure is February (1010.3mbar).

Average wind speed in September
Oyou, Gabon
  • Average wind speed in September: 5.1km/h

The windiest month (with the highest average wind speed) is August (5.5km/h).
The calmest month (with the lowest average wind speed) is November (4.3km/h).

Average humidity in September
Oyou, Gabon
  • Average humidity in September: 81%

The month with the highest relative humidity is October (88%).
The months with the lowest relative humidity are July and August (71%).

Average rainfall in September
Oyou, Gabon
  • Average rainfall in September: 144mm

The wettest month (with the highest rainfall) is October (256mm).
The driest month (with the least rainfall) is July (32mm).

Average rainfall days in September
Oyou, Gabon
  • Average rainfall days in September: 26.1 days

The month with the highest number of rainy days is October (29.6 days).
The month with the least rainy days is July (15.4 days).

Average daylight in September /
Average sunshine in September
Oyou, Gabon
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 12min).
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 December (Average sunshine: 9h and 54min).
The month with the least sunshine is October (Average sunshine: 6h and 12min).

Average sunshine days in September
Oyou, Gabon
  • Average sunshine days in September: 3.4 days

The month with the most sunshine days is July (13 days).
The month with the least sunshine days is October (0.9 days).

Average UV index in September
Oyou, Gabon
  • Average UV index in September: 6

The months with the highest UV index are January, April and July (UV index 7).
The month with the lowest UV index is October (UV index 5).

Average cloud cover in September
Oyou, Gabon
  • Average cloud cover in September: 51

The month with the most cloud cover is October (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 36).

Average visibility in September
Oyou, Gabon
  • Average visibility in September: 8km

The months with the highest visibility are July and August (10km).
The months with the lowest visibility are October and November (7km).

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