September weather forecast
Tai Shui Hang, Hong Kong

The first month of the autumn, September, is still a warm month in Tai Shui Hang, Hong Kong, with temperature in the range of an average high of 29.7°C (85.5°F) and an average low of 26.6°C (79.9°F).

Temperature

The beginning of September records an average high-temperature of a moderately hot 29.7°C (85.5°F), almost echoing the conditions of the previous month. Nighttime temperatures during September report a consistent average of 26.6°C (79.9°F).

Heat index

September's mean heat index is computed to be a very hot 36°C (96.8°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In Tai Shui Hang, the average relative humidity in September is 77%.

Rainfall

In Tai Shui Hang, during September, the rain falls for 23.3 days and regularly aggregates up to 170mm (6.69") of precipitation. In Tai Shui Hang, during the entire year, the rain falls for 225.1 days and collects up to 1279mm (50.35") of precipitation.

Daylight

In Tai Shui Hang, the average length of the day in September is 12h and 17min.
On the first day of the month, sunrise is at 06:05 and sunset at 18:40. On the last day of September, sunrise is at 06:14 and sunset at 18:11 HKT.

Sunshine

In September, the average sunshine is 8.1h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.