15-Day Weather Forecast - Hong Kong

15-day weather forecast for Hong Kong: temperatures from 23°C (73°F) to 34°C (93°F). Average daily high 31°C (88°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +32°C

15-Day Temperature Trend

32°23°TodaySep31°24°Tmrw28°25°Sun31°24°Mon31°23°Tue29°25°Wed30°25°Thu29°26°Fri31°26°Sat29°26°Sun32°26°Mon34°28°Tue32°25°Wed30°23°Thu32°23°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +32°/+23°
    feels +36°0.7 mm · 37%17 km/hUV 8 · V.Hi
    06:0818:30
  • Sat, Sep 12Tomorrow
    +31°/+24°
    feels +35°5.0 mm · 92%24 km/hUV 8 · V.Hi
    06:0918:29
  • Sun, Sep 13Sun
    +28°/+25°
    feels +33°15.8 mm · 92%20 km/hUV 8 · V.Hi
    06:0918:28
  • Mon, Sep 14Mon
    +31°/+24°
    feels +36°0 mm · 57%12 km/hUV 8 · Hi
    06:0918:27
  • Tue, Sep 15Tue
    +31°/+23°
    feels +36°12.5 mm · 37%16 km/hUV 8 · Hi
    06:0918:26
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  • Wed, Sep 16Wed
    +29°/+25°
    feels +33°0 mm · 10%18 km/hUV 8 · Hi
    06:1018:25
  • Thu, Sep 17Thu
    +30°/+25°
    feels +35°0 mm · 10%15 km/hUV 8 · V.Hi
    06:1018:24
  • Fri, Sep 18Fri
    +29°/+26°
    feels +34°4.8 mm · 35%15 km/hUV 8 · V.Hi
    06:1018:23
  • Sat, Sep 19Sat
    +31°/+26°
    feels +37°0.6 mm · 31%14 km/hUV 8 · V.Hi
    06:1118:22
  • Sun, Sep 20Sun
    +29°/+26°
    feels +37°3.3 mm · 27%8 km/hUV 6 · Hi
    06:1118:21
  • Mon, Sep 21Mon
    +32°/+26°
    feels +39°4.5 mm · 37%11 km/hUV 8 · V.Hi
    06:1118:20
  • Tue, Sep 22Tue
    +34°/+28°
    feels +39°0 mm · 35%15 km/hUV 8 · V.Hi
    06:1118:19
  • Wed, Sep 23Wed
    +32°/+25°
    feels +35°0 mm · 34%19 km/hUV 8 · V.Hi
    06:1218:18
  • Thu, Sep 24Thu
    +30°/+23°
    feels +31°0 mm · 43%18 km/hUV 8 · V.Hi
    06:1218:18
  • Fri, Sep 25Fri
    +32°/+23°
    feels +36°0 mm · 57%13 km/hUV 8 · V.Hi
    06:1218:17

Weather Insight

Hong Kong's 15-day outlook ranges from a low of 23°C to a high of 34°C, with an average daytime high near 31°C. That's 1° above the long-term average high of 30°C for this time of year. It continues a recent pattern — 19 of the last 28 days with published data have run warmer than normal. Air quality is currently Unhealthy for Sensitive Groups (AQI 127), driven mainly by PM2.5 at 47 μg/m³.

Today vs Normal

32°C+2° 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.

2026-08-28: 30°C30°2026-08-29: 31°C31°2026-08-30: 29°C29°2026-08-31: 29°C29°2026-09-01: 27°C27°2026-09-02: 29°C29°2026-09-03: 29°C29°2026-09-04: 29°C29°2026-09-05: 31°C31°2026-09-06: 30°C30°2026-09-07: 31°C31°2026-09-08: 32°C32°

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.

Extended Outlook for Hong Kong

Over the next 15 days, Hong Kong is forecast to see temperatures ranging from 22°C to 35°C, averaging a daily high of 31°C. The extended outlook indicates significant rainfall totalling 47.2 mm spread across 8 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.