September weather forecast
Wong Chuk Hang, Hong Kong

September welcomes a significant change in Wong Chuk Hang's weather as the rainfall decreases from 223mm (8.78") to 155mm (6.1"). This month showcases the beginning of the autumn season. September's longer daylight hours combined with lowering temperatures provide an inviting climate for outdoor activities. As the season progresses, relatively low wind gusts are observed. Tail end of summer and beginning of autumn showers signals a change in the city's all-encompassing weather pattern.

Temperature

The arrival of September in Wong Chuk Hang denotes a barely perceptible change in the average high-temperatures to a moderately hot 29.6°C (85.3°F) from August's 30.5°C (86.9°F). In Wong Chuk Hang, the September nights are characterized by an average low-temperature of 26.5°C (79.7°F), a minor dip from daytime readings.

Heat index

The heat index value for September is evaluated at a very hot 36°C (96.8°F). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

In September, the average relative humidity is 77%.

Rainfall

In Wong Chuk Hang, during September, the rain falls for 22.7 days and regularly aggregates up to 155mm (6.1") of precipitation. In Wong Chuk Hang, during the entire year, the rain falls for 224.5 days and collects up to 1264mm (49.76") of precipitation.

Daylight

The average length of the day in September in Wong Chuk Hang, Hong Kong, is 12h and 17min.
On the first day of September in Wong Chuk Hang, sunrise is at 06:06 and sunset at 18:40. On the last day of the month, sunrise is at 06:14 and sunset at 18:12 HKT.

Sunshine

In September, the average sunshine in Wong Chuk Hang, Hong Kong, is 8.4h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.