Weather in Hong Kong in May 2025
Average weather
Average temperature in Hong Kong in May
The expected average maximum temperature in May is +28°C with a maximum of +33°C and a minimum of +18°C.
The average maximum temperature goes up 53% by the end of the month, compared with the beginning of the month, from +25°C to +33°C.
Is Hong Kong warm or cold in May?
Hong Kong is typically warm in May.
Maximum temperatures go up compared to the previous month from +24°C to +27°C. The minimum temperature also goes up from +19°C to +22°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Hong Kong:
Water temperature in Hong Kong in May
Water in Hong Kong in May is Warm. It varies from +24°C to +29°C, with an average of +27°C. This is almost similar to the air temperature, which averages +27°C.
In May, water temperatures are average relative to the rest of the year:
Can you swim in Hong Kong in May?
Climate in Hong Kong in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +24°C | +27°C | +29°C | ||||
| Min. temperature | ||||||
| +9°C | +15°C | +18°C | ||||
| Max. temperature | ||||||
| +30°C | +34°C | +33°C | ||||
| Rainfall | ||||||
| 122 mm | 245 mm | 296 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +23°C | +27°C | +28°C | ||||
| Humidity | ||||||
| 82% | 83% | 83% | ||||
| Air pressure | ||||||
| 1012 HPa | 1008 HPa | 1005 HPa | ||||
| Sunny days | ||||||
| 1 | 1 | 1 | ||||
| Cloudy days | ||||||
| 9 | 4 | 2 | ||||
| Rainy days | ||||||
| 19 | 24 | 26 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May weather is still as ok as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +24°C to +27°C during the day. Prepare for more rain. Average rainfall goes from 122 mm to 245 mm. Humidity rises from 82% to 83%. The average wind speed doesn’t change much during May, staying around 3 m/s. The amount of sunny days stay about the same, averaging 1 sunny days during the month.
June brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Hong Kong is gradually decreasing during May, going from 2 m/s to 1 m/s over the course of the month.
Rain
How was the weather last May in Hong Kong?
Climate Change over Years
The climate in Hong Kong in May has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+23°C) and the highest in 2023 (+25°C). The driest year was 2011 with only 1147 mm of rainfall, and the wettest year was 2023 with 3151 mm.
FAQ
Is May a good time to visit Hong Kong?
Can you sunbathe in Hong Kong in May?
Can you swim in Hong Kong in May?
Is Hong Kong rainy in May?
Is it sunny in Hong Kong in May?
Monthly weather in Hong Kong
Source of the data
For this page, we’ve looked at the typical weather in Hong Kong, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.