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Hong Kong
Hong Kong weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Hong Kong?
For a warm holiday, the best week has been 27 October – 2 November (Weather Index 92). Favourable start dates for a 7-day trip run from 23 October to 5 November. July is warmest (32°C), December is driest and July has the most sun.
- Warmest
- July 32°C
- Coolest
- January 19°C
- Driest
- December 8% rain-day chance
- Wettest
- June and August 85% rain-day chance
- Sunniest
- July 11 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Hong Kong
Hong Kong historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 18.9 | 14.3 | 15.2 | 4.7 | 34.4 | 7.9 |
| February | 19.7 | 15.0 | 22.1 | 6.2 | 34.2 | 7.7 |
| March | 22.6 | 18.5 | 31.9 | 9.9 | 73.8 | 7.9 |
| April | 25.8 | 21.8 | 41.7 | 12.5 | 112.0 | 8.8 |
| May | 28.9 | 25.0 | 65.8 | 20.4 | 233.4 | 9.0 |
| June | 30.9 | 27.2 | 84.7 | 25.4 | 321.1 | 8.8 |
| July | 32.0 | 27.9 | 76.8 | 23.8 | 232.1 | 10.5 |
| August | 31.4 | 27.3 | 84.8 | 26.3 | 338.8 | 9.0 |
| September | 31.2 | 26.9 | 66.7 | 20.0 | 261.8 | 9.6 |
| October | 28.3 | 24.0 | 30.6 | 9.5 | 153.2 | 9.3 |
| November | 24.6 | 20.1 | 19.0 | 5.7 | 52.0 | 8.3 |
| December | 20.3 | 15.2 | 7.7 | 2.4 | 13.6 | 8.5 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.