15-Day Weather Forecast - Buenos Aires

15-day weather forecast for Buenos Aires: temperatures from 4°C (39°F) to 24°C (75°F). Average daily high 17°C (63°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°12°TodaySep12°7°Tmrw10°4°Sun14°5°Mon14°8°Tue12°4°Wed20°9°Thu19°13°Fri20°13°Sat22°16°Sun24°16°Mon16°11°Tue16°9°Wed19°12°Thu24°14°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +17°/+12°
    feels +16°0.9 mm · 33%13 km/hUV 4 · Mod
    06:5818:42
  • Sat, Sep 12Tomorrow
    +12°/+7°
    feels +10°4.0 mm · 39%20 km/hUV 1 · Low
    06:5718:43
  • Sun, Sep 13Sun
    +10°/+4°
    feels +9°14 km/hUV 6 · Hi
    06:5518:43
  • Mon, Sep 14Mon
    +14°/+5°
    feels +12°0.5 mm · 1%11 km/hUV 6 · Hi
    06:5418:44
  • Tue, Sep 15Tue
    +14°/+8°
    feels +11°0 mm · 2%18 km/hUV 6 · Mod
    06:5218:45
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  • Wed, Sep 16Wed
    +12°/+4°
    feels +9°13 km/hUV 7 · Hi
    06:5118:45
  • Thu, Sep 17Thu
    +20°/+9°
    feels +19°14 km/hUV 7 · Hi
    06:5018:46
  • Fri, Sep 18Fri
    +19°/+13°
    feels +18°13 km/hUV 7 · Hi
    06:4818:47
  • Sat, Sep 19Sat
    +20°/+13°
    feels +19°0 mm · 5%12 km/hUV 6 · Mod
    06:4718:48
  • Sun, Sep 20Sun
    +22°/+16°
    feels +23°2.0 mm · 29%10 km/hUV 7 · Hi
    06:4518:48
  • Mon, Sep 21Mon
    +24°/+16°
    feels +22°4.0 mm · 27%18 km/hUV 7 · Hi
    06:4418:49
  • Tue, Sep 22Tue
    +16°/+11°
    feels +14°0 mm · 20%13 km/hUV 7 · Hi
    06:4318:50
  • Wed, Sep 23Wed
    +16°/+9°
    feels +13°0 mm · 14%12 km/hUV 6 · Hi
    06:4118:50
  • Thu, Sep 24Thu
    +19°/+12°
    feels +17°0 mm · 24%13 km/hUV 3 · Mod
    06:4018:51
  • Fri, Sep 25Fri
    +24°/+14°
    feels +22°0 mm · 22%16 km/hUV 7 · Hi
    06:3818:52

Weather Insight

Buenos Aires's 15-day outlook ranges from a low of 4°C to a high of 24°C, with an average daytime high near 17°C. Air quality is currently Moderate (AQI 61), driven mainly by PM2.5 at 13 μg/m³.

Today vs Normal

17°C0° below normal

The long-term average high for today is 17°C.

8 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: 16°C16°2026-08-29: 17°C17°2026-08-30: 18°C18°2026-08-31: 16°C16°2026-09-01: 17°C17°2026-09-02: 19°C19°2026-09-03: 16°C16°2026-09-04: 16°C16°2026-09-05: 13°C13°2026-09-06: 10°C10°2026-09-07: 13°C13°2026-09-08: 16°C16°

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 Buenos Aires

Over the next 15 days, Buenos Aires is forecast to see temperatures ranging from 3°C to 24°C, averaging a daily high of 17°C. The extended outlook indicates occasional showers on 5 days, with 11.4 mm total accumulation. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.