May weather forecast
Sheung Shui, Hong Kong

As Sheung Shui, Hong Kong welcomes May, conditions transform dramatically. High temperatures define the month, soaring to 28.8°C (83.8°F) and dropping to 24.5°C (76.1°F). The high humidity from the past months continues, setting May as the wettest month of the year with 80mm (3.15") rainfall. As the dry season nears its end, residents and visitors prepare for the intense summer season on the horizon. Sun protection becomes crucial, considering the UV index and the heightened daytime temperature.

Temperature

Observing a minor shift, the average high-temperature during May adjusts from April's warm 25.6°C (78.1°F) to a still moderately hot 28.8°C (83.8°F). Throughout May, Sheung Shui observes a steady low-temperature average of 24.5°C (76.1°F), reflecting a minor dip from daytime highs.

Heat index

The heat index value for May is evaluated at a sweltering 35°C (95°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

With an average relative humidity of 82%, May is the most humid month in Sheung Shui.

Rainfall

In Sheung Shui, during May, the rain falls for 15.8 days and regularly aggregates up to 80mm (3.15") of precipitation. Throughout the year, there are 164.9 rainfall days, and 548mm (21.57") of precipitation is accumulated.

Daylight

In Sheung Shui, the average length of the day in May is 13h and 13min.
On the first day of May in Sheung Shui, 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 Sheung Shui 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 estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 7 transforms into these recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.