June weather forecast
Sai Shan, Hong Kong

June, the first month of the summer in Sai Shan, is still a warm month, with temperature in the range of an average low of 27.3°C (81.1°F) and an average high of 29.5°C (85.1°F).

Temperature

The advent of June sees the average high-temperature at a still moderately hot 29.5°C (85.1°F), subtly shifted from May's 27.7°C (81.9°F). Sai Shan documents an average low-temperature of 27.3°C (81.1°F) for the nights of June.

Heat index

In June, the average heat index is computed to be a very hot 37°C (98.6°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Sai Shan, the average relative humidity in June is 83%.

Rainfall

In June, the rain falls for 25.1 days. Throughout June, 206mm (8.11") of precipitation is accumulated. In Sai Shan, Hong Kong, during the entire year, the rain falls for 224.5 days and collects up to 1264mm (49.76") of precipitation.

Daylight

With an average of 13h and 30min of daylight, June has the longest days of the year.
On the first day of June in Sai Shan, 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 Sai Shan, the average sunshine in June is 9.5h.

UV index

The months with the highest UV index in Sai Shan, Hong Kong, are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In June, a daily UV index of 7 turns into the following recommendations:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.