Hong Kong Climate by Month – Rainy Season, Temperature Averages
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 · 2016–2025
| Monthly averages | High | Low | Rainfall | Rainy season |
|---|---|---|---|---|
| January | 18.6° | 13.1° | 39 mm | 6 |
| February | 19.5° | 13.9° | 46 mm | 7 |
| March | 22.1° | 17.2° | 95 mm | 13 |
| April | 24.8° | 20.3° | 165 mm | 16 |
| May | 27.2° | 23.5° | 269 mm | 22 |
| June | 28.8° | 25.6° | 394 mm | 27 |
| July | 29.8° | 26.2° | 297 mm | 26 |
| August | 29.4° | 25.7° | 411 mm | 27 |
| September | 29.2° | 25.0° | 303 mm | 22 |
| October | 27.0° | 22.1° | 177 mm | 11 |
| November | 24.0° | 18.6° | 88 mm | 6 |
| December | 20.1° | 13.8° | 19 mm | 3 |