Hong Kong weather

Our guide to the weather in Hong Kong during May

28

Average high

6

UV Index

346mm

Monthly rainfall

27

Sea temperature

May is an ideal time to visit Hong Kong, with its mild climate and average temperatures of around 25°C. It is also a great time to take part in the city's many cultural events, such as the Hong Kong Arts Festival and the Dragon Boat Festival. We've looked at the most up-to-date weather data for Hong Kong, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Hong Kong weather in May.

How warm is it in Hong Kong during May?

The temperature is extremely stable in May with average highs of 28℃ and lows just 3℃ lower at 25℃. Of course, the high humidity will make it feel even hotter. The UV index will be high at this time of year, so protection against skin and eye damage is needed. Try to limit exposure between 10am and 4pm. Apply broad spectrum SPF 30+ sunscreen every few hours, even if it's cloudy, or more frequently after sweating or swimming, and wear UV-blocking sunglasses too, and bear in mind that bright surfaces, such as sand and water increase UV exposure.

Does it rain in Hong Kong during May?

On average, there will be 14 rainy days during the month, amounting to 346.3mm in total. That's a lot of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a good chance that you'll catch a thunderstorm during your trip.

Is it windy in Hong Kong during May?

You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during May. The high humidity and warm temperature will make the breeze feel warm, so any cooling effect will be limted.

How warm is the sea in Hong Kong during May?

The water around Hong Kong reaches a very pleasant 27℃ during May. This is very warm, and will feel bath-like. People who normally feel the cold will find this temperature perfectly acceptable. The hot air temperature and relatively high humidity will mean that you will feel comfortably warm when coming out of the water.

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Weather in Hong Kong

Our month-by-month guide to the weather and climate in Hong Kong

18.9

Hong Kong weather in

January
20.0

Hong Kong weather in

February
22.3

Hong Kong weather in

March
24.8

Hong Kong weather in

April
27.9

Hong Kong weather in

May
29.8

Hong Kong weather in

June
30.6

Hong Kong weather in

July
30.9

Hong Kong weather in

August
30.4

Hong Kong weather in

September
28.0

Hong Kong weather in

October
24.5

Hong Kong weather in

November
20.1

Hong Kong weather in

December