15-Day Weather Forecast - Ljubljana

15-day weather forecast for Ljubljana: temperatures from 7°C (45°F) to 24°C (75°F). Average daily high 20°C (68°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°13°TodaySep22°11°Tmrw24°10°Sun24°15°Mon23°14°Tue22°12°Wed20°11°Thu21°9°Fri21°10°Sat23°13°Sun17°10°Mon19°7°Tue21°8°Wed13°7°Thu9°7°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +17°/+13°
    feels +17°22.4 mm · 98%10 km/hUV 1 · Low
    06:3419:21
  • Sat, Sep 12Tomorrow
    +22°/+11°
    feels +21°10 km/hUV 5 · Mod
    06:3619:19
  • Sun, Sep 13Sun
    +24°/+10°
    feels +24°0 mm · 8%4 km/hUV 5 · Mod
    06:3719:17
  • Mon, Sep 14Mon
    +24°/+15°
    feels +25°0.3 mm · 28%4 km/hUV 5 · Mod
    06:3819:15
  • Tue, Sep 15Tue
    +23°/+14°
    feels +24°0 mm · 3%7 km/hUV 5 · Mod
    06:3919:13
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  • Wed, Sep 16Wed
    +22°/+12°
    feels +25°19.8 mm · 58%9 km/hUV 5 · Mod
    06:4119:11
  • Thu, Sep 17Thu
    +20°/+11°
    feels +20°0 mm · 63%10 km/hUV 2 · Low
    06:4219:09
  • Fri, Sep 18Fri
    +21°/+9°
    feels +21°0 mm · 43%5 km/hUV 4 · Mod
    06:4319:07
  • Sat, Sep 19Sat
    +21°/+10°
    feels +22°0 mm · 38%5 km/hUV 5 · Mod
    06:4419:05
  • Sun, Sep 20Sun
    +23°/+13°
    feels +24°4.5 mm · 21%10 km/hUV 5 · Mod
    06:4619:03
  • Mon, Sep 21Mon
    +17°/+10°
    feels +16°0.9 mm · 20%3 km/hUV 5 · Mod
    06:4719:01
  • Tue, Sep 22Tue
    +19°/+7°
    feels +18°0 mm · 18%5 km/hUV 5 · Mod
    06:4819:00
  • Wed, Sep 23Wed
    +21°/+8°
    feels +19°0.6 mm · 36%17 km/hUV 4 · Mod
    06:4918:58
  • Thu, Sep 24Thu
    +13°/+7°
    feels +13°42.0 mm · 26%3 km/hUV 4 · Mod
    06:5118:56
  • Fri, Sep 25Fri
    +9°/+7°
    feels +9°7.2 mm · 19%3 km/hUV 1 · Low
    06:5218:54

Weather Insight

Ljubljana's 15-day outlook ranges from a low of 7°C to a high of 24°C, with an average daytime high near 20°C. That's 1° below the long-term average high of 21°C for this time of year. Air quality is currently good (AQI 28), with no notable outdoor health concerns.

Today vs Normal

17°C-4° below normal

The long-term average high for today is 21°C.

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

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

2026-08-28: 28°C28°2026-08-29: 24°C24°2026-08-30: 27°C27°2026-08-31: 28°C28°2026-09-01: 25°C25°2026-09-02: 26°C26°2026-09-03: 26°C26°2026-09-04: 27°C27°2026-09-05: 27°C27°2026-09-06: 25°C25°2026-09-07: 27°C27°2026-09-08: 28°C28°

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 Ljubljana

Over the next 15 days, Ljubljana is forecast to see temperatures ranging from 6°C to 24°C, averaging a daily high of 20°C. The extended outlook indicates significant rainfall totalling 97.7 mm spread across 8 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.