Tomorrow's Weather Forecast - Galway

Tomorrow's weather in Galway. high 18°C (64°F), low 15°C (59°F). Rainy.

Tomorrow’s Outlook

Tomorrow brings a similar temperature to today. Expect heavy rain in the morning and afternoon and night, with rain chances climbing as high as 100%. That risk lines up with humidity averaging 83% through the day the more moisture in the air, the more readily clouds build into showers. Humidity holds around 83%, giving the air a damp, heavy feel even without much heat behind it. Winds will turn gusty at times, reaching up to 63 km/h. Sunrise is at 7:04 AM and sunset at 7:59 PM, for about 12h 55m of daylight.

Tomorrow
18°/ 15°
Today18° / 13°

Tomorrow’s Hourly Weather Outlook

Morning6 AM – Noon17°
Rain probability
100%
Wind speed
31 km/h
AfternoonNoon – 6 PM18°
Rain probability
63%
Wind speed
17 km/h
Evening6 PM – Midn17°
Rain probability
14%
Wind speed
12 km/h
NightMidn – 6 AM16°
Rain probability
100%
Wind speed
30 km/h

24-Hour Rain & Temperature Forecast

Tomorrow12 Sep
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Temperature · peaks at +18°C

Planning Advice for Tomorrow

Clothing
Waterproof jacket and umbrella strongly recommended.
Outdoor
Not ideal for outdoor plans or car washes — heavy rain expected.
Travel
Expect traffic slowdowns from wet roads. Allow extra time.

Sunrise & Sunset

Sunrise
Dawn 6:34 AM
Total Daylight
Full day forecastSolar noon 1:31 PM
Sunset
Dusk 8:29 PM
vs today-4 min daylight
Sunrise shift2 min later
Sunset shift2 min earlier

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

Galway is forecast to reach a high of 18°C tomorrow, with an overnight low around 15°C. That's 1° above the long-term average high of 17°C for this time of year. Expect a high chance of rain (100% probability) and moderate breezes averaging 31 km/h. Air quality is currently good (AQI 47), with no notable outdoor health concerns.

Today vs Normal

18°C+1° above normal

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

11 of the last 28 days with published data ran above normal.

That's a break from the pattern - today's forecast runs above normal even though the recent stretch mostly ran below.

2026-08-28: 21°C21°2026-08-29: 16°C16°2026-08-30: 19°C19°2026-08-31: 17°C17°2026-09-01: 18°C18°2026-09-02: 18°C18°2026-09-03: 17°C17°2026-09-04: 17°C17°2026-09-05: 16°C16°2026-09-06: 19°C19°2026-09-07: 16°C16°2026-09-08: 15°C15°

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.