15-Day Weather Forecast - Cairns

15-day weather forecast for Cairns: temperatures from 15°C (59°F) to 27°C (81°F). Average daily high 25°C (77°F) over the next 15 days.

Hourly Forecast by Day

Today·12 Sep
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Temperature · peaks at +25°C

15-Day Temperature Trend

25°18°TodaySep25°18°Tmrw24°18°Mon24°18°Tue25°16°Wed25°15°Thu24°18°Fri24°18°Sat25°17°Sun24°17°Mon25°17°Tue26°15°Wed26°16°Thu27°16°Fri27°17°Sat
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Sat, Sep 12Today
    +25°/+18°
    feels +25°1.2 mm · 95%24 km/hUV 8 · V.Hi
    06:1418:11
  • Sun, Sep 13Tomorrow
    +25°/+18°
    feels +26°3.1 mm · 31%22 km/hUV 8 · V.Hi
    06:1418:11
  • Mon, Sep 14Mon
    +24°/+18°
    feels +26°4.9 mm · 73%23 km/hUV 8 · V.Hi
    06:1318:11
  • Tue, Sep 15Tue
    +24°/+18°
    feels +25°5.2 mm · 73%21 km/hUV 8 · V.Hi
    06:1218:11
  • Wed, Sep 16Wed
    +25°/+16°
    feels +27°1.7 mm · 31%20 km/hUV 8 · V.Hi
    06:1118:11
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  • Thu, Sep 17Thu
    +25°/+15°
    feels +26°3.5 mm · 50%24 km/hUV 8 · V.Hi
    06:1018:12
  • Fri, Sep 18Fri
    +24°/+18°
    feels +23°7.5 mm · 67%27 km/hUV 8 · V.Hi
    06:1018:12
  • Sat, Sep 19Sat
    +24°/+18°
    feels +23°1.6 mm · 70%23 km/hUV 6 · Hi
    06:0918:12
  • Sun, Sep 20Sun
    +25°/+17°
    feels +26°0.6 mm · 49%18 km/hUV 8 · V.Hi
    06:0818:12
  • Mon, Sep 21Mon
    +24°/+17°
    feels +25°0 mm · 21%15 km/hUV 8 · V.Hi
    06:0718:12
  • Tue, Sep 22Tue
    +25°/+17°
    feels +27°0 mm · 20%13 km/hUV 8 · V.Hi
    06:0618:12
  • Wed, Sep 23Wed
    +26°/+15°
    feels +28°0 mm · 41%13 km/hUV 8 · V.Hi
    06:0518:12
  • Thu, Sep 24Thu
    +26°/+16°
    feels +29°0 mm · 39%11 km/hUV 9 · V.Hi
    06:0518:12
  • Fri, Sep 25Fri
    +27°/+16°
    feels +31°0 mm · 27%10 km/hUV 9 · V.Hi
    06:0418:13
  • Sat, Sep 26Sat
    +27°/+17°
    feels +29°0.6 mm · 28%15 km/hUV 8 · Hi
    06:0318:13

Weather Insight

Cairns's 15-day outlook ranges from a low of 15°C to a high of 27°C, with an average daytime high near 25°C. That's 1° below the long-term average high of 26°C for this time of year. It continues a recent pattern — 6 of the last 28 days with published data have run cooler than normal. Air quality is currently good (AQI 29), with no notable outdoor health concerns.

Today vs Normal

25°C-1° below normal

The long-term average high for today is 26°C.

6 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: 24°C24°2026-08-29: 23°C23°2026-08-30: 22°C22°2026-08-31: 22°C22°2026-09-01: 22°C22°2026-09-02: 23°C23°2026-09-03: 24°C24°2026-09-04: 24°C24°2026-09-05: 25°C25°2026-09-06: 25°C25°2026-09-07: 25°C25°2026-09-08: 27°C27°

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 Cairns

Over the next 15 days, Cairns is forecast to see temperatures ranging from 15°C to 28°C, averaging a daily high of 25°C. The extended outlook indicates frequent showers on 10 out of 15 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.