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
The advent of September denotes an average high-temperature of a still hot 30°C (86°F), subtly different from August's 31.3°C (88.3°F). Fui Sha Wai registers a small shift from peak daytime temperatures, with a consistent average low-temperature of 26.4°C (79.5°F) during September.Heat index
The heat index for September is calculated to be a very hot 37°C (98.6°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.Observations indicate that the heat index values are for shady locations with light wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. 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 children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
The average relative humidity in September is 76%.Rainfall
In Fui Sha Wai, in September, it is raining for 22.7 days, with typically 150mm (5.91") of accumulated precipitation. Throughout the year, there are 207.6 rainfall days, and 1194mm (47.01") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 17min.On the first day of the month, sunrise is at 06:06 and sunset at 18:41. On the last day of September, sunrise is at 06:15 and sunset at 18:12 HKT.
Sunshine
In Fui Sha Wai, Hong Kong, the average sunshine in September is 8.2h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 7 suggests these recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. 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
How hot is it in September?
What is the average humidity in September?
How much does it rain in Fui Sha Wai in September?
How many hours of daylight does Fui Sha Wai have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Fui Sha Wai have in September?
What are the months with the highest UV index?
What is the UV index intensity in September?
Average temperature in September
Fui Sha Wai, Hong Kong
- Average high temperature in September: 30°C
The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (18.8°C).
- Average low temperature in September: 26.4°C
The months with the highest average low temperature are July and August (27.3°C).
The coldest month (with the lowest average low temperature) is January (14.6°C).
Average pressure in September
Fui Sha Wai, Hong Kong
- Average pressure in September: 1008.4mbar
The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is August (1004.7mbar).
Average wind speed in September
Fui Sha Wai, Hong Kong
- Average wind speed in September: 12.1km/h
The windiest month (with the highest average wind speed) is December (14.2km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity in September
Fui Sha Wai, Hong Kong
- Average humidity in September: 76%
The month with the highest relative humidity is May (83%).
The month with the lowest relative humidity is December (68%).
Average rainfall in September
Fui Sha Wai, Hong Kong
- Average rainfall in September: 150mm
The wettest month (with the highest rainfall) is August (215mm).
The driest month (with the least rainfall) is December (19mm).
Average rainfall days in September
Fui Sha Wai, Hong Kong
- Average rainfall days in September: 22.7 days
The month with the highest number of rainy days is July (25.3 days).
The month with the least rainy days is December (8.7 days).
Average daylight in September /
Average sunshine in September
Fui Sha Wai, Hong Kong
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are March and December (Average sunshine: 5h and 18min).
Average sunshine days in September
Fui Sha Wai, Hong Kong
- Average sunshine days in September: 5.8 days
The month with the most sunshine days is December (20.2 days).
The month with the least sunshine days is June (4.1 days).
Average UV index in September
Fui Sha Wai, Hong Kong
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in September
Fui Sha Wai, Hong Kong
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is October (Cloud cover 36).
Average visibility in September
Fui Sha Wai, Hong Kong
- Average visibility in September: 10km
The months with the highest visibility are January, February, July, September, October, November and December (10km).
The months with the lowest visibility are March, April, May, June and August (9km).
