May weather forecast
Lo Wu, Hong Kong

The last month of the spring, May, is another warm month in Lo Wu, Hong Kong, with an average temperature varying between 24.5°C (76.1°F) and 28.8°C (83.8°F).

Temperature

The shift from April to May is marked by a slight increase in the average high-temperature, moving from a moderately hot 25.6°C (78.1°F) to a still warm 28.8°C (83.8°F). Lo Wu's nighttime temperatures in May display a slight drop from daytime highs, averaging to a still warm 24.5°C (76.1°F).

Heat index

For May, the heat index is computed to be a sweltering 35°C (95°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. 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.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

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

Rainfall

In Lo Wu, in May, during 15.8 rainfall days, 80mm (3.15") of precipitation is typically accumulated. Throughout the year, in Lo Wu, there are 164.9 rainfall days, and 548mm (21.57") of precipitation is accumulated.

Daylight

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

Sunshine

In Lo Wu, the average sunshine in May is 8.1h.

UV index

The months with the highest UV index in Lo Wu, Hong Kong, are May through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In May, a daily maximum UV index of 7 leads to the following instructions:
Guard against overexposure. Protection from sun-induced harm is essential. 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. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.