15-Day Weather Forecast - San Salvador

15-day weather forecast for San Salvador: temperatures from 20°C (68°F) to 35°C (95°F). Average daily high 29°C (84°F) over the next 15 days.

Hourly Forecast by Day

Today·10 Sep
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Temperature · peaks at +35°C

15-Day Temperature Trend

35°23°TodaySep35°23°Tmrw31°22°Sat30°22°Sun31°22°Mon31°21°Tue31°21°Wed31°21°Thu29°20°Fri28°22°Sat25°21°Sun27°22°Mon25°21°Tue23°21°Wed26°21°Thu
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Thu, Sep 10Today
    +35°/+23°
    feels +37°1.1 mm · 12%12 km/hUV 9 · V.Hi
    05:4518:01
  • Fri, Sep 11Tomorrow
    +35°/+23°
    feels +38°13.7 mm · 64%12 km/hUV 9 · V.Hi
    05:4518:00
  • Sat, Sep 12Sat
    +31°/+22°
    feels +35°6.3 mm · 73%11 km/hUV 9 · V.Hi
    05:4517:59
  • Sun, Sep 13Sun
    +30°/+22°
    feels +35°6.2 mm · 61%10 km/hUV 9 · V.Hi
    05:4517:59
  • Mon, Sep 14Mon
    +31°/+22°
    feels +35°8.3 mm · 82%9 km/hUV 9 · V.Hi
    05:4517:58
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  • Tue, Sep 15Tue
    +31°/+21°
    feels +35°8.5 mm · 79%10 km/hUV 9 · V.Hi
    05:4517:57
  • Wed, Sep 16Wed
    +31°/+21°
    feels +35°10.1 mm · 82%11 km/hUV 9 · V.Hi
    05:4517:57
  • Thu, Sep 17Thu
    +31°/+21°
    feels +35°10.1 mm · 78%10 km/hUV 9 · V.Hi
    05:4517:56
  • Fri, Sep 18Fri
    +29°/+20°
    feels +33°3.8 mm · 70%10 km/hUV 9 · V.Hi
    05:4517:55
  • Sat, Sep 19Sat
    +28°/+22°
    feels +32°6.5 mm · 85%9 km/hUV 9 · V.Hi
    05:4517:54
  • Sun, Sep 20Sun
    +25°/+21°
    feels +31°16.3 mm · 94%7 km/hUV 7 · Hi
    05:4517:54
  • Mon, Sep 21Mon
    +27°/+22°
    feels +32°17.3 mm · 90%7 km/hUV 6 · Mod
    05:4517:53
  • Tue, Sep 22Tue
    +25°/+21°
    feels +30°8.3 mm · 88%7 km/hUV 1 · Low
    05:4517:52
  • Wed, Sep 23Wed
    +23°/+21°
    feels +28°17.8 mm · 91%6 km/hUV 3 · Low
    05:4517:52
  • Thu, Sep 24Thu
    +26°/+21°
    feels +31°6.5 mm · 84%6 km/hUV 5 · Mod
    05:4517:51

Weather Insight

San Salvador's 15-day outlook ranges from a low of 20°C to a high of 35°C, with an average daytime high near 29°C. Air quality is currently Moderate (AQI 56), driven mainly by PM2.5 at 8.5 μg/m³.

Today vs Normal

35°C+6° above normal

The long-term average high for today is 29°C.

28 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: 34°C34°2026-08-29: 34°C34°2026-08-30: 34°C34°2026-08-31: 33°C33°2026-09-01: 32°C32°2026-09-02: 33°C33°2026-09-03: 31°C31°2026-09-04: 32°C32°2026-09-05: 32°C32°2026-09-06: 33°C33°2026-09-07: 33°C33°2026-09-08: 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 San Salvador

Over the next 15 days, San Salvador is forecast to see temperatures ranging from 20°C to 35°C, averaging a daily high of 29°C. The extended outlook indicates significant rainfall totalling 140.8 mm spread across 15 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.