Hong Kong
Hong Kong
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Hong Kong, Hong Kong

A bird
A bird's eye view of the lit city of Hong Kong, in Hong Kong Island
May is a transitional month in spring as the temperatures rise along with an increase in wet conditions and the highest humidity of the year at 83%. It is pleasantly warm with the average temperatures in the range of 23.9°C (75°F) to 28.3°C (82.9°F) with an odd day or two touching a hot 31.7°C (89.1°F).
The skies are mostly cloudy as the daily sunshine lasts for 5 hours. It is a precursor of the frequent heavy rains of the summer as the rain gauge accumulates 302.3mm (11.9").
May is an ideal time to tour the beautiful Outlying Islands with many ferry rides ready to explore the peaceful side of Hong Kong. Tourists find the spring a great holiday time due to the pleasant weather as sunny days alternate between cloudy ones, to undertake fantastic tours from deserted beaches to dolphin watching. Some of them prefer to be in light shirts with the rise in the heat and to experience the coolness of the raindrops!

What is the temperature in May in Hong Kong?

In Hong Kong, Hong Kong, in May, the average high-temperature is 28.4°C (83.1°F), and the average low-temperature is 24.1°C (75.4°F). In May, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines air temperature and relative humidity, is appraised at 33.7°C (92.7°F).

What are the most humid months in Hong Kong?

Months with the highest humidity in Hong Kong are April and May, with an average relative humidity of 83%.

What is the average humidity in May in Hong Kong?

The average relative humidity in May in Hong Kong is 83%.

How many days does it rain in May in Hong Kong?

In Hong Kong, during May, the rain falls for 14.7 days and regularly aggregates up to 304.7mm (12") of precipitation.

How warm is the water in May in Hong Kong?

In Hong Kong, Hong Kong, the average seawater temperature in May is 26.8°C (80.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Hong Kong have in May?

In Hong Kong, Hong Kong, the average length of the day in May is 13.2h.

How many hours of sunshine does Hong Kong have in May?

In Hong Kong, Hong Kong, the average sunshine in May is 4.5h.

What is the month with the highest UV index in Hong Kong?

April through August, with an average maximum UV index of 12, are months with the highest UV index in Hong Kong, Hong Kong.

What is the UV index reading in May in Hong Kong?

The average daily maximum UV index in May in Hong Kong, Hong Kong, is 12. A UV Index value of 11, and more, symbolizes an extreme health threat from unprotected exposure to the UV radiation.
Average temperature in May - Hong Kong, Hong Kong
  • Average high temperature in May: 28.4°C

The warmest month (with the highest average high temperature) is July (31.4°C).
The month with the lowest average high temperature is January (18.6°C).

  • Average low temperature in May: 24.1°C

The month with the highest average low temperature is July (26.8°C).
The coldest month (with the lowest average low temperature) is January (14.5°C).

Average humidity in May - Hong Kong, Hong Kong
  • Average humidity in May: 83%

Months with the highest relative humidity are April and May (83%).
The month with the lowest relative humidity is December (69%).

Average rainfall in May - Hong Kong, Hong Kong
  • Average rainfall in May: 304.7mm

The wettest month (with the highest rainfall) is June (456.1mm).
The driest month (with the lowest rainfall) is January (24.7mm).

Average rainfall days in May - Hong Kong, Hong Kong
  • Average rainfall days in May: 14.7 days

The month with the highest number of rainy days is June (19.1 days).
The month with the lowest number of rainy days is December (4.5 days).

Average sea temperature in May - Hong Kong, Hong Kong
  • Average sea temperature in May: 26.8°C

The best month for swimming (with the highest average sea temperature) is July (29.1°C).
The coldest month (with the lowest average sea temperature) is February (18.9°C).

Average daylight in May / Average sunshine in May - Hong Kong, Hong Kong
  • Average daylight in May: 13.2h

The month with the longest days is June (Average daylight: 13.5h).
The month with shortest days is December (Average daylight: 10.8h).

  • Average sunshine in May: 4.5h

The month with most sunshine is July (Average sunshine: 6.8h).
The month with least sunshine is March (Average sunshine: 2.9h).

Average UV index in May - Hong Kong, Hong Kong
  • Average UV index in May: 12

Months with the highest UV index are April, May, June, July and August (UV index 12).
Months with the lowest UV index are January, November and December (UV index 7).