May weather forecast
Wong Chuk Hang, Hong Kong

May signals the oncoming of summer in Wong Chuk Hang, characterized by high temperatures and an increase in rainfall. During this month, the average rainfall peaks to 171mm (6.73"), almost double that of April. Increased rainfall coincides with higher humidity, and the city is enveloped in a slightly hazy, humid atmosphere most days. Despite these conditions, daylight hours extend as summer advances, making days longer. The pressure chart suggests a continued downward trend, typical of a warm, rainy season.

Temperature

The shift into May is characterized by a subtle rise in the average high-temperature, transitioning from April's 24.5°C (76.1°F) to a still warm 27.7°C (81.9°F). Wong Chuk Hang indicates a consistently low-temperature of 24.9°C (76.8°F) during the nights of May.

Heat index

In May, the average heat index is estimated at a tropical 32°C (89.6°F). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
Always consider that heat index estimations are for light winds and places in the shade. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is the outcome of merging air's temperature and its humidity metrics. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.

Humidity

May is the most humid month, with an average relative humidity of 84%.

Rainfall

In Wong Chuk Hang, Hong Kong, during May, the rain falls for 22.9 days and regularly aggregates up to 171mm (6.73") of precipitation. In Wong Chuk Hang, during the entire year, the rain falls for 224.5 days and collects up to 1264mm (49.76") of precipitation.

Daylight

The average length of the day in May is 13h and 12min.
On the first day of the month, sunrise is at 05:51 and sunset at 18:49. On the last day of May, sunrise is at 05:39 and sunset at 19:03 HKT.

Sunshine

In Wong Chuk Hang, the average sunshine in May is 8.4h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 7 in May suggests the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Tightly woven clothing, when worn loosely, shields effectively against the Sun.