September weather forecast
Cheung Sok, Hong Kong

The first month of the autumn, September, is still a hot month in Cheung Sok, Hong Kong, with an average temperature fluctuating between 30°C (86°F) and 26.4°C (79.5°F).

Temperature

The ushering in of September brings an average high-temperature of a still tropical 30°C (86°F), closely mirroring the 31.3°C (88.3°F) of August. Cheung Sok's nights in September maintain a consistent average of 26.4°C (79.5°F), demonstrating a minimal differential from its daytime temperature.

Heat index

For September, the heat index is evaluated at a fiery hot 37°C (98.6°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The average relative humidity in September in Cheung Sok is 76%.

Rainfall

In Cheung Sok, Hong Kong, during September, the rain falls for 22.7 days and regularly aggregates up to 150mm (5.91") of precipitation. Throughout the year, there are 207.6 rainfall days, and 1194mm (47.01") of precipitation is accumulated.

Daylight

In Cheung Sok, the average length of the day in September is 12h and 17min.
On the first day of September in Cheung Sok, sunrise is at 06:06 and sunset at 18:40. On the last day of the month, sunrise is at 06:15 and sunset at 18:12 HKT.

Sunshine

The average sunshine in September is 8.2h.

UV index

The months with the highest UV index in Cheung Sok are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 7 in September transforms into this advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.