September weather forecast
Tai Po, Hong Kong

September in Tai Po, Hong Kong witnesses the initial signs of seasonal change, with a gentle decline in temperature and a slight drop in rainfall levels. Despite many rain showers, ample sunshine hours provide plenty of opportunities for outdoor activities. As September unfolds, the intense heat of August gives way to somewhat milder days, although humidity levels remain high. The city registers a decrease in rainfall from the highs of summer, down from 215mm (8.46") in August to September’s 164mm (6.46"). Proceeding into October, the gradual transition to the cooler season continues.

Temperature

The advent of September in Tai Po, Hong Kong, reveals an average high-temperature of a still hot 30.1°C (86.2°F), showing minimal difference from the prior month. Recording a slight decline in temperature during the nights, Tai Po's September temperatures average at a warm 26.4°C (79.5°F).

Heat index

The heat index in September is calculated to be a very hot 37°C (98.6°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Note that heat index values are valued for light wind and location in the shade. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In Tai Po, in September, it is raining for 23.3 days, with typically 164mm (6.46") of accumulated precipitation. Throughout the year, there are 208.2 rainfall days, and 1208mm (47.56") 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 06:06 and sunset at 18:40. On the last day of September, sunrise is at 06:14 and sunset at 18:12 HKT.

Sunshine

The average sunshine in September is 8h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 7 in September translates into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.