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
Weather in September
Temperature
Yana experiences an average high-temperature of a still moderately hot 28°C (82.4°F) in September, marking an insignificant shift from 26.8°C (80.2°F) in August. September in Yana generally records an average low-temperature of 20.8°C (69.4°F).Heat index
During September, the heat index is appraised at a hot 34°C (93.2°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
In September, the average relative humidity is 92%.Rainfall
In September, the rain falls for 29.7 days. Throughout September, 254mm (10") of precipitation is accumulated. Throughout the year, in Yana, there are 209.7 rainfall days, and 1688mm (66.46") of precipitation is accumulated.Daylight
In September, the average length of the day in Yana is 12h and 11min.On the first day of September, sunrise is at 06:40 and sunset at 18:58. On the last day of the month, sunrise is at 06:37 and sunset at 18:40 GMT.
Sunshine
The average sunshine in September is 5.7h.UV index
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 6 in September translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Yana in September?
What is the average humidity in September in Yana?
How many days does it rain in September in Yana?
What is the average length of the day in September in Yana?
When are sunrise and sunset in September in Yana?
How long on average sun shines in September in Yana?
How high is the UV index in September in Yana?
Average temperature in September
Yana, Sierra Leone
- Average high temperature in September: 28°C
The warmest month (with the highest average high temperature) is March (39.2°C).
The month with the lowest average high temperature is August (26.8°C).
- Average low temperature in September: 20.8°C
The month with the highest average low temperature is May (22.8°C).
The coldest month (with the lowest average low temperature) is January (18.1°C).
Average pressure in September
Yana, Sierra Leone
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is July (1014mbar).
The months with the lowest atmospheric pressure are March and April (1010.5mbar).
Average wind speed in September
Yana, Sierra Leone
- Average wind speed in September: 4km/h
The windiest month (with the highest average wind speed) is April (5.5km/h).
The calmest month (with the lowest average wind speed) is October (3.4km/h).
Average humidity in September
Yana, Sierra Leone
- Average humidity in September: 92%
The month with the highest relative humidity is August (94%).
The month with the lowest relative humidity is January (43%).
Average rainfall in September
Yana, Sierra Leone
- Average rainfall in September: 254mm
The wettest month (with the highest rainfall) is August (436mm).
The driest months (with the least rainfall) are January and February (1mm).
Average rainfall days in September
Yana, Sierra Leone
- Average rainfall days in September: 29.7 days
The month with the highest number of rainy days is August (30.8 days).
The month with the least rainy days is February (0.8 days).
Average daylight in September /
Average sunshine in September
Yana, Sierra Leone
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in September: 5h and 4min
The months with the most sunshine are January, February, March and December (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 3h and 48min).
Average sunshine days in September
Yana, Sierra Leone
- Average sunshine days in September: 0.1 days
The month with the most sunshine days is January (29.7 days).
The months with the least sunshine days are August and September (0.1 days).
Average UV index in September
Yana, Sierra Leone
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April and November (UV index 7).
The months with the lowest UV index are July and August (UV index 5).
Average cloud cover in September
Yana, Sierra Leone
- Average cloud cover in September: 71
The month with the most cloud cover is August (Cloud cover 82).
The month with the least cloud cover is February (Cloud cover 9).
Average visibility in September
Yana, Sierra Leone
- Average visibility in September: 6km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are July, August and September (6km).
Yana, Sierra Leone
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