Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
In September, the average high-temperature registers at a still moderately hot 29.5°C (85.1°F), nearly identical to August's 29.1°C (84.4°F). Old-Yundum records a mild decrease in temperature during the nights of September, averaging a still moderately hot 26.1°C (79°F).Heat index
The heat index in September is calculated to be a sweltering 36°C (96.8°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
August and September, with an average relative humidity of 80%, are the most humid months in Old-Yundum.Rainfall
In Old-Yundum, during September, the rain falls for 17.6 days and regularly aggregates up to 121mm (4.76") of precipitation. In Old-Yundum, during the entire year, the rain falls for 77 days and collects up to 427mm (16.81") of precipitation.Daylight
In Old-Yundum, the average length of the day in September is 12h and 12min.On the first day of the month, sunrise is at 06:55 and sunset at 19:17. On the last day of September, sunrise is at 06:56 and sunset at 18:57 GMT.
Sunshine
In September, the average sunshine is 8.2h.UV index
The months with the highest UV index in Old-Yundum are January, April through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 7 during September translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Old-Yundum during September?
What is the most humid month in Old-Yundum?
What is the average humidity in September in Old-Yundum?
How many days does it rain in September in Old-Yundum?
What is the average length of the day in September in Old-Yundum?
When are sunrise and sunset in September in Old-Yundum?
How many hours of sunshine does Old-Yundum have in September?
What are the months with the highest UV index in Old-Yundum?
What is the UV index intensity in September in Old-Yundum?
Average temperature in September
Old-Yundum, The Gambia
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is November (31.8°C).
The month with the lowest average high temperature is May (28.1°C).
- Average low temperature in September: 26.1°C
The month with the highest average low temperature is October (26.9°C).
The coldest month (with the lowest average low temperature) is February (21.6°C).
Average pressure in September
Old-Yundum, The Gambia
- Average pressure in September: 1012mbar
The month with the highest atmospheric pressure is July (1012.6mbar).
The month with the lowest atmospheric pressure is April (1010.3mbar).
Average wind speed in September
Old-Yundum, The Gambia
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is February (18.6km/h).
The calmest month (with the lowest average wind speed) is September (12.8km/h).
Average humidity in September
Old-Yundum, The Gambia
- Average humidity in September: 80%
The months with the highest relative humidity are August and September (80%).
The month with the lowest relative humidity is January (39%).
Average rainfall in September
Old-Yundum, The Gambia
- Average rainfall in September: 121mm
The wettest month (with the highest rainfall) is August (177mm).
The driest months (with the least rainfall) are January, February and December (0mm).
Average rainfall days in September
Old-Yundum, The Gambia
- Average rainfall days in September: 17.6 days
The month with the highest number of rainy days is August (21.6 days).
The month with the least rainy days is February (0.2 days).
Average daylight in September /
Average sunshine in September
Old-Yundum, The Gambia
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 24min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are March, April and May (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 7h and 18min).
Average sunshine days in September
Old-Yundum, The Gambia
- Average sunshine days in September: 10.4 days
The months with the most sunshine days are January and December (30.7 days).
The month with the least sunshine days is August (7.3 days).
Average UV index in September
Old-Yundum, The Gambia
- Average UV index in September: 7
The months with the highest UV index are January, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are February and March (UV index 6).
Average cloud cover in September
Old-Yundum, The Gambia
- Average cloud cover in September: 37
The month with the most cloud cover is August (Cloud cover 50).
The month with the least cloud cover is April (Cloud cover 6).
Average visibility in September
Old-Yundum, The Gambia
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
