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 is the warmest month, with an average high-temperature of 30.5°C (86.9°F) and an average low-temperature of 27.7°C (81.9°F).

Heat index

The average heat index in August is computed to be a sweltering 39°C (102.2°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In August, the average relative humidity is 79%.

Rainfall

The month with the most rainfall is August, when the rain falls for 25.8 days and typically aggregates up to 223mm (8.78") of precipitation.

Daylight

In Happy Valley, the average length of the day in August 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, in Happy Valley, sunrise is at 06:05 and sunset at 18:41 HKT.

Sunshine

In August, the average sunshine is 8.9h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In August, an average UV index of 7 transforms into the following instructions:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.