15-Day Weather Forecast - Tokyo

15-day weather forecast for Tokyo: temperatures from 18°C (64°F) to 31°C (88°F). Average daily high 26°C (79°F) over the next 15 days.

Hourly Forecast by Day

Today·12 Sep
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Temperature · peaks at +25°C

15-Day Temperature Trend

25°19°TodaySep27°22°Tmrw30°23°Mon26°23°Tue27°21°Wed25°20°Thu22°20°Fri28°21°Sat28°23°Sun25°22°Mon28°21°Tue31°24°Wed24°19°Thu23°18°Fri26°18°Sat
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Sat, Sep 12Today
    +25°/+19°
    feels +28°7.1 mm · 69%5 km/hUV 2 · Low
    05:2117:53
  • Sun, Sep 13Tomorrow
    +27°/+22°
    feels +31°0.1 mm · 23%4 km/hUV 4 · Mod
    05:2117:51
  • Mon, Sep 14Mon
    +30°/+23°
    feels +35°0 mm · 11%15 km/hUV 7 · Hi
    05:2217:50
  • Tue, Sep 15Tue
    +26°/+23°
    feels +31°14.8 mm · 84%7 km/hUV 3 · Mod
    05:2317:49
  • Wed, Sep 16Wed
    +27°/+21°
    feels +31°4.4 mm · 80%11 km/hUV 1 · Low
    05:2417:47
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  • Thu, Sep 17Thu
    +25°/+20°
    feels +26°0.1 mm · 69%13 km/hUV 1 · Low
    05:2517:46
  • Fri, Sep 18Fri
    +22°/+20°
    feels +24°1.2 mm · 47%12 km/hUV 1 · Low
    05:2517:44
  • Sat, Sep 19Sat
    +28°/+21°
    feels +32°3.6 mm · 47%8 km/hUV 2 · Low
    05:2617:43
  • Sun, Sep 20Sun
    +28°/+23°
    feels +33°0 mm · 49%6 km/hUV 2 · Low
    05:2717:41
  • Mon, Sep 21Mon
    +25°/+22°
    feels +28°0.2 mm · 42%8 km/hUV 3 · Mod
    05:2817:40
  • Tue, Sep 22Tue
    +28°/+21°
    feels +32°0.4 mm · 35%9 km/hUV 6 · Hi
    05:2817:38
  • Wed, Sep 23Wed
    +31°/+24°
    feels +36°0.8 mm · 34%9 km/hUV 5 · Mod
    05:2917:37
  • Thu, Sep 24Thu
    +24°/+19°
    feels +30°5.8 mm · 43%9 km/hUV 6 · Hi
    05:3017:35
  • Fri, Sep 25Fri
    +23°/+18°
    feels +24°1.2 mm · 39%10 km/hUV 6 · Mod
    05:3117:34
  • Sat, Sep 26Sat
    +26°/+18°
    feels +24°14.7 mm · 35%24 km/hUV 6 · Hi
    05:3117:33

Weather Insight

Tokyo's 15-day outlook ranges from a low of 18°C to a high of 31°C, with an average daytime high near 26°C. That's 2° below the long-term average high of 28°C for this time of year. It continues a recent pattern — 9 of the last 28 days with published data have run cooler than normal. Air quality is currently Moderate (AQI 84), driven mainly by PM2.5 at 26 μg/m³.

Today vs Normal

25°C-3° below normal

The long-term average high for today is 28°C.

9 of the last 28 days with published data ran above normal.

It continues that pattern - today's forecast is also running below normal.

2026-08-28: 31°C31°2026-08-29: 25°C25°2026-08-30: 25°C25°2026-08-31: 27°C27°2026-09-01: 28°C28°2026-09-02: 30°C30°2026-09-03: 30°C30°2026-09-04: 26°C26°2026-09-05: 25°C25°2026-09-06: 23°C23°2026-09-07: 27°C27°2026-09-08: 28°C28°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Extended Outlook for Tokyo

Over the next 15 days, Tokyo is forecast to see temperatures ranging from 18°C to 32°C, averaging a daily high of 26°C. The extended outlook indicates significant rainfall totalling 54.4 mm spread across 13 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.