June weather forecast
Happy Valley, Hong Kong

As June arrives in Happy Valley, the weather is predominantly hot. The landscape basks in the long sunshine hours and high temperature averages. Cloud coverage dips, which means more blue skies over the city. Approaching July, the temperature will remain more or less consistent, while the rainfall will decrease slightly. Interestingly, June holds the highest level of potential daylight of around 13.5 hours.

Temperature

Happy Valley's shift into June sets the average high-temperature at a still warm 29.5°C (85.1°F), a figure that deviates only slightly from May's 27.7°C (81.9°F). During June, Happy Valley's nighttime temperatures demonstrate a subtle cooling from daytime highs, stabilizing at a still moderately hot 27.3°C (81.1°F).

Heat index

June's mean heat index is computed to be a torrid 37°C (98.6°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Remember that heat index calculations are made for conditions in the shade with light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The average relative humidity in June is 83%.

Rainfall

In Happy Valley, in June, it is raining for 25.1 days, with typically 206mm (8.11") of accumulated precipitation. Throughout the year, there are 224.5 rainfall days, and 1264mm (49.76") of precipitation is accumulated.

Daylight

June has the longest days of the year, with an average of 13h and 30min of daylight.
On the first day of June, sunrise is at 05:38 and sunset at 19:03. On the last day of the month, sunrise is at 05:42 and sunset at 19:11 HKT.

Sunshine

In June, the average sunshine is 9.5h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average maximum UV index of 7 in June leads to these recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.