15-Day Weather Forecast - Hamilton

15-day weather forecast for Hamilton: temperatures from 8°C (46°F) to 28°C (82°F). Average daily high 21°C (70°F) over the next 15 days.

Hourly Forecast by Day

Today·11 Sep
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Temperature · peaks at +25°C

15-Day Temperature Trend

25°13°TodaySep27°14°Tmrw26°15°Sun20°12°Mon21°13°Tue23°20°Wed21°18°Thu28°18°Fri21°16°Sat17°15°Sun16°14°Mon16°14°Tue20°14°Wed24°17°Thu15°8°Fri
Colour scale for daily high temperature bars

15-Day Weather Forecast

Updated just now
  • Date
    High / Low
  • Fri, Sep 11Today
    +25°/+13°
    feels +23°12 km/hUV 6 · Mod
    06:5419:36
  • Sat, Sep 12Tomorrow
    +27°/+14°
    feels +29°0.4 mm · 18%16 km/hUV 5 · Mod
    06:5519:34
  • Sun, Sep 13Sun
    +26°/+15°
    feels +26°0.4 mm · 24%31 km/hUV 5 · Mod
    06:5619:32
  • Mon, Sep 14Mon
    +20°/+12°
    feels +18°0 mm · 24%17 km/hUV 6 · Mod
    06:5719:31
  • Tue, Sep 15Tue
    +21°/+13°
    feels +20°0 mm · 44%19 km/hUV 4 · Mod
    06:5919:29
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  • Wed, Sep 16Wed
    +23°/+20°
    feels +24°0 mm · 45%13 km/hUV 4 · Mod
    07:0019:27
  • Thu, Sep 17Thu
    +21°/+18°
    feels +22°6.3 mm · 43%26 km/hUV 1 · Low
    07:0119:25
  • Fri, Sep 18Fri
    +28°/+18°
    feels +28°9.3 mm · 20%25 km/hUV 5 · Mod
    07:0219:23
  • Sat, Sep 19Sat
    +21°/+16°
    feels +22°31.5 mm · 14%22 km/hUV 5 · Mod
    07:0319:22
  • Sun, Sep 20Sun
    +17°/+15°
    feels +14°0 mm · 12%20 km/hUV 4 · Mod
    07:0419:20
  • Mon, Sep 21Mon
    +16°/+14°
    feels +14°4.5 mm · 11%29 km/hUV 0 · Low
    07:0519:18
  • Tue, Sep 22Tue
    +16°/+14°
    feels +14°1.2 mm · 13%28 km/hUV 1 · Low
    07:0619:16
  • Wed, Sep 23Wed
    +20°/+14°
    feels +20°0 mm · 17%16 km/hUV 5 · Mod
    07:0719:14
  • Thu, Sep 24Thu
    +24°/+17°
    feels +25°5.1 mm · 17%24 km/hUV 4 · Mod
    07:0919:13
  • Fri, Sep 25Fri
    +15°/+8°
    feels +13°21.9 mm · 16%39 km/hUV 3 · Low
    07:1019:11

Weather Insight

Hamilton's 15-day outlook ranges from a low of 8°C to a high of 28°C, with an average daytime high near 21°C. That's 3° below the long-term average high of 24°C for this time of year. Air quality is currently good (AQI 23), with no notable outdoor health concerns.

Today vs Normal

25°C+1° above normal

The long-term average high for today is 24°C.

19 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: 25°C25°2026-08-29: 27°C27°2026-08-30: 22°C22°2026-08-31: 26°C26°2026-09-01: 31°C31°2026-09-02: 30°C30°2026-09-03: 29°C29°2026-09-04: 27°C27°2026-09-05: 26°C26°2026-09-06: 25°C25°2026-09-07: 27°C27°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 Hamilton

Over the next 15 days, Hamilton is forecast to see temperatures ranging from 8°C to 29°C, averaging a daily high of 21°C. The extended outlook indicates significant rainfall totalling 80.6 mm spread across 9 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.