September weather forecast
Tin Liu, Hong Kong

The first month of the autumn, September, is still a hot month in Tin Liu, Hong Kong, with an average temperature ranging between min 26.4°C (79.5°F) and max 30°C (86°F).

Temperature

The onset of September manifests an average high-temperature of a still hot 30°C (86°F), demonstrating a minor variation from the preceding month. In Tin Liu, September nights experience a modest descent in temperature from daily peaks, cooling down to an average of 26.4°C (79.5°F).

Heat index

September's heat index is evaluated at a sweltering 37°C (98.6°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In Tin Liu, during September, the rain falls for 22.7 days and regularly aggregates up to 150mm (5.91") of precipitation. In Tin Liu, Hong Kong, during the entire year, the rain falls for 207.6 days and collects up to 1194mm (47.01") of precipitation.

Daylight

The average length of the day in September in Tin Liu 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 18:11 HKT.

Sunshine

The average sunshine in September is 8.2h.

UV index

The months with the highest UV index in Tin Liu are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.