May weather forecast
Sha Tau Kok, Hong Kong

May, the last month of the spring in Sha Tau Kok, is another warm month, with an average temperature ranging between max 28.8°C (83.8°F) and min 24.5°C (76.1°F).

Temperature

The shift into May brings a slight increase in the average high-temperature, moving from 25.6°C (78.1°F) in April to a still warm 28.8°C (83.8°F). Sha Tau Kok in May experiences a minor decline in temperature, with an average low of 24.5°C (76.1°F) at night.

Heat index

The heat index for May is evaluated at a sweltering 35°C (95°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
In terms of the heat index, values are set with light wind and shade conditions in mind. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

The most humid month is May, with an average relative humidity of 82%.

Rainfall

In May, the rain falls for 15.8 days. Throughout May, 80mm (3.15") of precipitation is accumulated. In Sha Tau Kok, during the entire year, the rain falls for 164.9 days and collects up to 548mm (21.57") of precipitation.

Daylight

The average length of the day in May is 13h and 13min.
On the first day of May, sunrise is at 05:50 and sunset at 18:50. On the last day of the month, sunrise is at 05:38 and sunset at 19:03 HKT.

Sunshine

In May, the average sunshine in Sha Tau Kok is 8.1h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 7 translates into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.