- Clothing
- Waterproof jacket and umbrella strongly recommended.
Tomorrow's Weather Forecast - Hong Kong
Tomorrow's weather in Hong Kong. high 29°C (84°F), low 23°C (73°F). Rain Showers.
Tomorrow’s Outlook
Tomorrow will be 2°C cooler than today. Expect heavy rain in the afternoon and evening, with rain chances climbing as high as 86%. That risk lines up with humidity averaging 83% through the day the more moisture in the air, the more readily clouds build into showers. Humidity stays high near 83%, so it will feel muggier and stickier than the temperature alone suggests. A light breeze near 22 km/h is expected. Sunrise is at 6:09 AM and sunset at 6:29 PM, for about 12h 21m of daylight.
- Tomorrow
- 29°/ 23°
- Today31° / 23°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon26°
- Rain probability
- 22%
- Wind speed
- 16 km/h
AfternoonNoon – 6 PM28°
- Rain probability
- 76%
- Wind speed
- 17 km/h
Evening6 PM – Midn25°
- Rain probability
- 86%
- Wind speed
- 22 km/h
NightMidn – 6 AM24°
- Rain probability
- 35%
- Wind speed
- 14 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Not ideal for outdoor plans or car washes — heavy rain expected.
- Travel
- Expect traffic slowdowns from wet roads. Allow extra time.
Sunrise & Sunset
Sunrise
Dawn 5:39 AMTotal Daylight
Full day forecastSolar noon 12:19 PM
Sunset
Dusk 6:59 PMvs today-1 min daylight
Sunrise shift1 min later
Sunset shift1 min earlier
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Hong Kong is forecast to reach a high of 29°C tomorrow, with an overnight low around 23°C. That's 1° below the long-term average high of 30°C for this time of year. Expect a high chance of rain (86% probability) and moderate breezes averaging 22 km/h. Air quality is currently Unhealthy for Sensitive Groups (AQI 119), driven mainly by O₃ at 37 μg/m³.
Today vs Normal
31°C+1° above normal
The long-term average high for today is 30°C.
19 of the last 28 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air Quality
Unhealthy for Sensitive Groups
Health effects can be felt by sensitive groups, including children, older adults, and people with respiratory or heart conditions. The general public is less likely to be affected.