15-Day Weather Forecast - Turku

15-day weather forecast for Turku: temperatures from 5°C (41°F) to 17°C (63°F). Average daily high 15°C (59°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +17°C

15-Day Temperature Trend

17°8°TodaySep16°10°Tmrw15°13°Sun17°7°Mon17°6°Tue17°12°Wed17°11°Thu16°12°Fri16°11°Sat13°10°Sun15°9°Mon15°9°Tue12°8°Wed13°7°Thu12°5°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +17°/+8°
    feels +14°0 mm · 10%19 km/hUV 3 · Mod
    06:4820:05
  • Sat, Sep 12Tomorrow
    +16°/+10°
    feels +15°0 mm · 82%14 km/hUV 2 · Low
    06:5020:02
  • Sun, Sep 13Sun
    +15°/+13°
    feels +15°1.2 mm · 65%14 km/hUV 1 · Low
    06:5319:58
  • Mon, Sep 14Mon
    +17°/+7°
    feels +15°11 km/hUV 3 · Mod
    06:5519:55
  • Tue, Sep 15Tue
    +17°/+6°
    feels +16°0.2 mm · 35%12 km/hUV 3 · Mod
    06:5719:52
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  • Wed, Sep 16Wed
    +17°/+12°
    feels +16°11.8 mm · 73%20 km/hUV 2 · Low
    07:0019:49
  • Thu, Sep 17Thu
    +17°/+11°
    feels +14°3.0 mm · 45%15 km/hUV 3 · Mod
    07:0219:46
  • Fri, Sep 18Fri
    +16°/+12°
    feels +14°17.4 mm · 86%17 km/hUV 2 · Low
    07:0519:43
  • Sat, Sep 19Sat
    +16°/+11°
    feels +13°8.0 mm · 55%22 km/hUV 3 · Low
    07:0719:40
  • Sun, Sep 20Sun
    +13°/+10°
    feels +13°12.4 mm · 36%9 km/hUV 3 · Low
    07:0919:37
  • Mon, Sep 21Mon
    +15°/+9°
    feels +13°1.8 mm · 57%12 km/hUV 2 · Low
    07:1219:34
  • Tue, Sep 22Tue
    +15°/+9°
    feels +12°2.6 mm · 43%16 km/hUV 3 · Low
    07:1419:31
  • Wed, Sep 23Wed
    +12°/+8°
    feels +10°6.6 mm · 43%12 km/hUV 3 · Low
    07:1719:28
  • Thu, Sep 24Thu
    +13°/+7°
    feels +10°5.2 mm · 37%14 km/hUV 3 · Low
    07:1919:25
  • Fri, Sep 25Fri
    +12°/+5°
    feels +9°0 mm · 37%11 km/hUV 2 · Low
    07:2119:21

Weather Insight

Turku's 15-day outlook ranges from a low of 5°C to a high of 17°C, with an average daytime high near 15°C. That's 1° below the long-term average high of 16°C for this time of year. Air quality is currently good (AQI 26), with no notable outdoor health concerns.

Today vs Normal

17°C+1° above normal

The long-term average high for today is 16°C.

16 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: 21°C21°2026-08-29: 18°C18°2026-08-30: 20°C20°2026-08-31: 19°C19°2026-09-01: 20°C20°2026-09-02: 21°C21°2026-09-03: 18°C18°2026-09-04: 19°C19°2026-09-05: 18°C18°2026-09-06: 17°C17°2026-09-07: 18°C18°2026-09-08: 16°C16°

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

Air Quality

Air Quality
Good

Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.

Extended Outlook for Turku

Over the next 15 days, Turku is forecast to see temperatures ranging from 5°C to 18°C, averaging a daily high of 15°C. The extended outlook indicates significant rainfall totalling 70.2 mm spread across 11 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.