Hong Kong weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Fair
Best time to visit: October – February
What is the weather like in Hong Kong in May?
In May, Hong Kong is hot: daytime highs average 28 °C, and even at night it stays warm at around 24 °C. The sea averages 26.2 °C – lovely and warm for swimming. Expect around 5 hours of sunshine a day. It rains often – on about 20 days, adding up to 237 mm. The air is often humid and muggy. All in all, May is a so-so month for a holiday in Hong Kong.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 13 h 11 min05:44 – 18:55
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or more
- Wind
- 16 km/haverage daily peak
- Cloud cover
- 76 %on average
- Hot days
- 2 days30 °C or more
- Time zone
- UTC+8Asia/Hong_Kong
How the score comes together
- Temperatureweight 50 %92 %
- Sunshineweight 20 %25 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Hong Kong in May: quick answers
Is Hong Kong hot in May?
Yes. In May, Hong Kong is hot: daytime highs average 28 °C and nights stay around 24 °C. On about 2 days the thermometer climbs to 30 °C or more.
Can you swim in Hong Kong in May?
Yes. In May the sea averages 26.2 °C – lovely and warm for swimming.
Does it rain much in Hong Kong in May?
It rains often – on about 20 days, adding up to 237 mm.
Hong Kong month by month
The whole year in Hong KongAll destinations: Hong KongWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)