September weather forecast
Sha Tau Kok, Hong Kong

The first month of the autumn, September, is still a tropical month in Sha Tau Kok, Hong Kong, with an average temperature ranging between max 30.5°C (86.9°F) and min 25.9°C (78.6°F).

Temperature

The transition into September marks the average high-temperature at a still tropical 30.5°C (86.9°F), differing minimally from August's 31.4°C (88.5°F). Sha Tau Kok logs an average low-temperature of 25.9°C (78.6°F) during the nights of September, subtly lower than its daytime highs.

Heat index

September's average heat index is appraised at a sweltering 38°C (100.4°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Note that heat index values are valued for light wind and location in the shade. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.

Humidity

The average relative humidity in September in Sha Tau Kok is 75%.

Rainfall

In Sha Tau Kok, Hong Kong, in September, it is raining for 17.9 days, with typically 66mm (2.6") of accumulated precipitation. In Sha Tau Kok, during the entire year, the rain falls for 164.9 days and collects up to 548mm (21.57") of precipitation.

Daylight

The average length of the day in September in Sha Tau Kok is 12h and 17min.
On the first day of September, sunrise is at 06:05 and sunset at 18:40. On the last day of the month, sunrise is at 06:14 and sunset at 18:11 HKT.

Sunshine

In September, the average sunshine in Sha Tau Kok is 8.1h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Sha Tau Kok, Hong Kong. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In September, a daily UV index of 7 turns into the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.