September weather forecast
Ganzi, Gabon

September

Weather in September

September in Ganzi can be identified by a return of a higher proportion of rain, with precipitation climbing steeply to 154mm (6.06"). Simultaneously, humidity reaches its peak for the year at 87%, making the atmosphere feel denser and heavier. Variations in temperature, wind speed, and pressure are less drastic, maintaining the tropical cityscape of Ganzi. A notable feature is the reduced sunlight hours, hinting at a return of the wetter months. September portrays a typical pre-monsoon aura creating a soothing and refreshing environment in Ganzi.

Temperature

August's transformation into September witnesses an average high-temperature of a still moderately hot 29.3°C (84.7°F) in Ganzi, noting a minor change from the preceding month. An average low-temperature of 20.8°C (69.4°F) is observed during the September nights.

Heat index

The average heat index in September is calculated to be a torrid 37°C (98.6°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Heat index readings emphasize conditions of light breezes and shaded spots. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', shows a temperature sensation when both heat and moisture conditions are combined. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

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

Rainfall

In Ganzi, in September, during 28.4 rainfall days, 154mm (6.06") of precipitation is typically accumulated. Throughout the year, in Ganzi, there are 308.3 rainfall days, and 1481mm (58.31") of precipitation is accumulated.

Daylight

In September, the average length of the day in Ganzi is 12h and 7min.
On the first day of the month, sunrise is at 06:03 and sunset at 18:11. On the last day of September, sunrise is at 05:54 and sunset at 18:00 WAT.

Sunshine

The average sunshine in September is 6.2h.

UV index

The months with the lowest UV index are September and October, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 5 in September translates into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Frequently asked questions

Is it hot in Ganzi during September?
September temperatures vary between a high-temperature of 29.3°C (84.7°F) and a low-temperature of 20.8°C (69.4°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in September is calculated to be 37°C (98.6°F).
What is the average humidity in September in Ganzi?
In September, the average relative humidity in Ganzi is 87%.
How much does it rain in Ganzi in September?
In Ganzi, in September, during 28.4 rainfall days, 154mm (6.06") of precipitation is typically accumulated.
How many hours of daylight does Ganzi have in September?
In Ganzi, Gabon, the average day length in September is 12h and 7min.
When are sunrise and sunset in September in Ganzi?
In September, on the first day of the month, sunrise is at 06:03 and sunset at 18:11. On the last day of the month, sunrise is at 05:54 and sunset at 18:00 WAT.
How long on average sun shines in September in Ganzi?
In September, the average sunshine duration in Ganzi is 6.2h.
When is the lowest UV index in Ganzi?
September and October, with an average maximum UV index of 5, are months with the lowest UV index.
How high is the UV index in September in Ganzi?
The average daily maximum UV index in September in Ganzi is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability 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
Ganzi, Gabon
  • Average high temperature in September: 29.3°C

The warmest month (with the highest average high temperature) is March (32.3°C).
The month with the lowest average high temperature is October (28.9°C).

  • Average low temperature in September: 20.8°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).

Average pressure in September
Ganzi, Gabon
  • Average pressure in September: 1012.8mbar

The month with the highest atmospheric pressure is July (1013.5mbar).
The month with the lowest atmospheric pressure is February (1010.1mbar).

Average wind speed in September
Ganzi, Gabon
  • Average wind speed in September: 4.5km/h

The windiest month (with the highest average wind speed) is August (5km/h).
The calmest month (with the lowest average wind speed) is November (3.5km/h).

Average humidity in September
Ganzi, Gabon
  • Average humidity in September: 87%

The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is January (76%).

Average rainfall in September
Ganzi, Gabon
  • Average rainfall in September: 154mm

The wettest month (with the highest rainfall) is October (240mm).
The driest month (with the least rainfall) is January (39mm).

Average rainfall days in September
Ganzi, Gabon
  • Average rainfall days in September: 28.4 days

The month with the highest number of rainy days is October (30.1 days).
The month with the least rainy days is July (19.7 days).

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

The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 6min).

  • Average sunshine in September: 6h and 1min

The months with the most sunshine are January and December (Average sunshine: 8h and 30min).
The month with the least sunshine is October (Average sunshine: 4h and 48min).

Average sunshine days in September
Ganzi, Gabon
  • Average sunshine days in September: 0.8 days

The months with the most sunshine days are January and July (7.2 days).
The months with the least sunshine days are September and October (0.8 days).

Average UV index in September
Ganzi, Gabon
  • Average UV index in September: 5

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

Average cloud cover in September
Ganzi, Gabon
  • Average cloud cover in September: 67

The month with the most cloud cover is October (Cloud cover 73).
The month with the least cloud cover is January (Cloud cover 41).

Average visibility in September
Ganzi, Gabon
  • Average visibility in September: 6km

The months with the highest visibility are January, February, July, August and December (8km).
The months with the lowest visibility are April, May, September, October and November (6km).

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