15-Day Weather Forecast - Thessaloniki

15-day weather forecast for Thessaloniki: temperatures from 18°C (64°F) to 33°C (91°F). Average daily high 28°C (82°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +33°C

15-Day Temperature Trend

33°20°TodaySep33°22°Tmrw29°20°Sun28°18°Mon22°18°Tue26°18°Wed25°21°Thu28°19°Fri30°21°Sat31°22°Sun30°23°Mon29°22°Tue27°21°Wed27°19°Thu28°19°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +33°/+20°
    feels +34°14 km/hUV 7 · Hi
    07:0419:44
  • Sat, Sep 12Tomorrow
    +33°/+22°
    feels +35°0.1 mm · 20%21 km/hUV 6 · Hi
    07:0519:42
  • Sun, Sep 13Sun
    +29°/+20°
    feels +25°2.7 mm · 35%26 km/hUV 6 · Hi
    07:0619:40
  • Mon, Sep 14Mon
    +28°/+18°
    feels +28°13 km/hUV 6 · Hi
    07:0719:39
  • Tue, Sep 15Tue
    +22°/+18°
    feels +23°8.4 mm · 13%6 km/hUV 6 · Hi
    07:0819:37
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  • Wed, Sep 16Wed
    +26°/+18°
    feels +27°0 mm · 13%10 km/hUV 6 · Hi
    07:0919:35
  • Thu, Sep 17Thu
    +25°/+21°
    feels +26°0 mm · 13%13 km/hUV 6 · Hi
    07:1019:34
  • Fri, Sep 18Fri
    +28°/+19°
    feels +30°17.9 mm · 18%14 km/hUV 6 · Hi
    07:1119:32
  • Sat, Sep 19Sat
    +30°/+21°
    feels +33°0 mm · 9%10 km/hUV 6 · Hi
    07:1219:30
  • Sun, Sep 20Sun
    +31°/+22°
    feels +33°0 mm · 15%7 km/hUV 6 · Hi
    07:1319:29
  • Mon, Sep 21Mon
    +30°/+23°
    feels +32°0.6 mm · 12%8 km/hUV 6 · Hi
    07:1419:27
  • Tue, Sep 22Tue
    +29°/+22°
    feels +31°3.0 mm · 16%9 km/hUV 6 · Mod
    07:1519:25
  • Wed, Sep 23Wed
    +27°/+21°
    feels +28°0 mm · 16%6 km/hUV 6 · Mod
    07:1619:24
  • Thu, Sep 24Thu
    +27°/+19°
    feels +29°0 mm · 18%10 km/hUV 6 · Mod
    07:1719:22
  • Fri, Sep 25Fri
    +28°/+19°
    feels +29°0 mm · 17%17 km/hUV 6 · Mod
    07:1819:20

Weather Insight

Thessaloniki's 15-day outlook ranges from a low of 18°C to a high of 33°C, with an average daytime high near 28°C. Air quality is currently Moderate (AQI 52), driven mainly by PM2.5 at 8.5 μg/m³.

Today vs Normal

33°C+5° above normal

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

16 of the last 19 days with published data ran above normal.

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

2026-08-19: 34°C34°2026-08-20: 35°C35°2026-08-21: 36°C36°2026-08-22: 38°C38°2026-08-23: 38°C38°2026-08-24: 36°C36°2026-08-25: 35°C35°2026-08-26: 36°C36°2026-08-27: 36°C36°2026-08-28: 34°C34°2026-08-29: 31°C31°2026-08-30: 33°C33°

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 Thessaloniki

Over the next 15 days, Thessaloniki is forecast to see temperatures ranging from 17°C to 34°C, averaging a daily high of 28°C. The extended outlook indicates significant rainfall totalling 32.7 mm spread across 6 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.