August weather forecast
Happy Valley, Hong Kong

In August, Happy Valley continues to experience hot weather, characterized by high humidity levels. Extended daylight hours persist throughout this month. Taking a glimpse into September, a drop in temperature and rainfall is expected. August records a peak in rainfall, with a total accumulation measuring 223mm (8.78"). The torrential downpours during this month stand out as one of the highest observed throughout the year.

Temperature

August brings the highest temperatures, with an average high of 30.5°C (86.9°F) and an average low of 27.7°C (81.9°F).

Heat index

The heat index value during August is appraised at a very hot 39°C (102.2°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In August, the average relative humidity is 79%.

Rainfall

August is the month with the most rainfall in Happy Valley. Rain falls for 25.8 days and accumulates 223mm (8.78") of precipitation.

Daylight

In August, the average length of the day in Happy Valley, Hong Kong, is 12h and 53min.
On the first day of the month, sunrise is at 05:55 and sunset at 19:03. On the last day of August, sunrise is at 06:05 and sunset at 18:41 HKT.

Sunshine

In August, the average sunshine is 8.9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum UV index of 7 in August translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.