September weather forecast
Ayem, Gabon

Weather in September

September, the first month of the spring in Ayem, is still a warm month, with temperature in the range of an average high of 29.1°C (84.4°F) and an average low of 20.7°C (69.3°F).

Temperature

In September, the average high-temperature is essentially the same as in August - a still warm 29.1°C (84.4°F). In Ayem, Gabon, in September, the average low-temperature is 20.7°C (69.3°F).

Heat index

The average heat index in September is estimated at a torrid 37°C (98.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, differences in body mass, height, and shape, wind). 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.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In Ayem, the average relative humidity in September is 87%.

Rainfall

In Ayem, during September, the rain falls for 26.1 days and regularly aggregates up to 146mm (5.75") of precipitation. Throughout the year, in Ayem, there are 313.6 rainfall days, and 1610mm (63.39") of precipitation is accumulated.

Daylight

September has the shortest days of the year in Ayem, with an average of 12h and 7min of daylight.
On the first day of September, sunrise is at 06:11 and sunset at 18:18. On the last day of the month, sunrise is at 06:01 and sunset at 18:08 WAT.

Sunshine

In September, the average sunshine in Ayem is 5.5h.

UV index

The months with the lowest UV index in Ayem are September and October, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Ayem?

In Ayem, Gabon, in September, the average high-temperature is 29.1°C (84.4°F), and the average low-temperature is 20.7°C (69.3°F). in September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 37°C (98.6°F).

What is the average humidity in September in Ayem?

In September, the average relative humidity in Ayem is 87%.

How many days does it rain in September in Ayem?

In September, the rain falls for 26.1 days. Throughout September, 146mm (5.75") of precipitation is accumulated.

What is the month with the shortest days in Ayem?

September has the shortest days of the year in Ayem, Gabon, with an average of 12h and 7min of daylight.

What is the average length of the day in September in Ayem?

The average day length in September is 12h and 7min.

When are sunrise and sunset in September in Ayem?

In September, on the first day of the month, sunrise is at 06:11 and sunset at 18:18. On the last day of the month, in Ayem, sunrise is at 06:01 and sunset at 18:08 WAT.

How long on average sun shines in September in Ayem?

In Ayem, the average sunshine duration in September is 5.5h.

What is the month with the lowest UV index in Ayem?

September and October, with an average maximum UV index of 5, are months with the lowest UV index in Ayem.

How high is the UV index in September in Ayem?

In September, the average daily maximum UV index in Ayem is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Ayem, Gabon

Average temperature in September - Ayem, Gabon
  • Average high temperature in September: 29.1°C

The warmest months (with the highest average high temperature) are January and March (31.8°C).
The month with the lowest average high temperature is October (28.6°C).

  • Average low temperature in September: 20.7°C

The month with the highest average low temperature is March (21.9°C).
The coldest month (with the lowest average low temperature) is July (20.1°C).

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Average pressure in September
Ayem, Gabon

Average pressure in September - Ayem, Gabon
  • Average pressure in September: 1013mbar

The month with the highest atmospheric pressure is July (1013.9mbar).
The month with the lowest atmospheric pressure is February (1010.3mbar).

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Average wind speed in September
Ayem, Gabon

Average wind speed in September - Ayem, Gabon
  • Average wind speed in September: 4.4km/h

The windiest month (with the highest average wind speed) is August (4.8km/h).
The calmest month (with the lowest average wind speed) is November (3.5km/h).

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Average humidity in September
Ayem, Gabon

Average humidity in September - Ayem, Gabon
  • Average humidity in September: 87%

The month with the highest relative humidity is October (90%).
The month with the lowest relative humidity is January (81%).

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Average rainfall in September
Ayem, Gabon

Average rainfall in September - Ayem, Gabon
  • Average rainfall in September: 146mm

The wettest month (with the highest rainfall) is October (238mm).
The driest month (with the least rainfall) is July (59mm).

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Average rainfall days in September
Ayem, Gabon

Average rainfall days in September - Ayem, Gabon
  • Average rainfall days in September: 26.1 days

The month with the highest number of rainy days is March (30 days).
The month with the least rainy days is July (17.2 days).

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Average daylight in September /
Average sunshine in September
Ayem, Gabon

Average daylight in September / Average sunshine in September - Ayem, Gabon
  • Average daylight in September: 12h and 7min

The month with the longest days is December (Average daylight: 12h and 8min).
The month with the shortest days is September (Average daylight: 12h and 7min).

  • Average sunshine in September: 5h and 30min

The month with the most sunshine is January (Average sunshine: 7h and 48min).
The month with the least sunshine is October (Average sunshine: 4h and 54min).

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Average sunshine days in September
Ayem, Gabon

Average sunshine days in September - Ayem, Gabon
  • Average sunshine days in September: 3 days

The month with the most sunshine days is July (11.8 days).
The month with the least sunshine days is November (0.2 days).

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Average UV index in September
Ayem, Gabon

Average UV index in September - Ayem, Gabon
  • Average UV index in September: 5

The month with the highest UV index is February (UV index 7).
The months with the lowest UV index are September and October (UV index 5).

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Average cloud cover in September
Ayem, Gabon

Average cloud cover in September - Ayem, Gabon
  • Average cloud cover in September: 73

The month with the most cloud cover is October (Cloud cover 77).
The month with the least cloud cover is January (Cloud cover 54).

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Average visibility in September
Ayem, Gabon

Average visibility in September - Ayem, Gabon
  • Average visibility in September: 6km

The months with the highest visibility are January, February, July, August and December (7km).
The months with the lowest visibility are May and October (5km).

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