Hong Kong Weather in May – Average Temperature and Rainfall
- High
- 27.2°
- Low
- 23.5°
- Rainfall
- 269 mm
- Rainy season
- 22d
- max
- 32.2°
- min
- 15.0°
May
- Early
- 26.5° 62.9 mm
- Mid
- 27.1° 77.9 mm
- Late
- 28.0° 128.1 mm
Summary
The climate figures for Hong Kong are averaged from 2016–2025 observations (10 years). Annual rainfall averages about 2,301 mm.
The rainy season runs April–October. The wettest month is August with 411.1 mm across 27 rain days; the driest is December at just 19 mm.
The hottest month is July (average high 29.8°C) and the coolest is January (18.6°C).
The most comfortable time to visit Hong Kong is December — less rain and milder heat.
Monthly averages
Common questions
Will it rain in Hong Kong today?
Yes. Rain is expected around 10:00–16:00, totalling roughly 2.1 mm.
How hot is it in Hong Kong today?
Between 25°C and 31°C, with a felt maximum of 36°C.
What is the weather in Hong Kong tomorrow?
Tomorrow: thunderstorm, 23–29°C, with a 73% chance of rain.