September weather forecast
Chek Nai Ping, Hong Kong

September, the first month of the autumn in Chek Nai Ping, is also a hot month, with an average temperature ranging between min 26.3°C (79.3°F) and max 30°C (86°F).

Temperature

The initiation of September sees an average high-temperature of a still tropical 30°C (86°F), showing minor variations from the previous month. The temperature during September nights demonstrates a small drop from the daytime highs, settling to an average of 26.3°C (79.3°F).

Heat index

During September, the heat index is appraised at a fiery hot 37°C (98.6°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of 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 highly critical to babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

In Chek Nai Ping, the average relative humidity in September is 76%.

Rainfall

In Chek Nai Ping, in September, it is raining for 19.8 days, with typically 94mm (3.7") of accumulated precipitation. Throughout the year, in Chek Nai Ping, there are 187.1 rainfall days, and 771mm (30.35") of precipitation is accumulated.

Daylight

In September, the average length of the day 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

The average sunshine in September in Chek Nai Ping is 8.2h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in September translates into this advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.