Galway weather in August

August in Galway: nice, rainy, with clean air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Galway🇮🇪 Ireland · British Isles · City81
  1. 55Jan
  2. 58Feb
  3. 64Mar
  4. 74Apr
  5. 83May
  6. 85Jun
  7. 86Jul
  8. 81Aug
  9. 76Sep
  10. 67Oct
  11. 59Nov
  12. 52Dec

#4 of 12 months in Galway · #629 of 1413 destinations to visit in August · comfort 81/100 (tier A)

Days
18°C
Nights
13°C
Wet days
16
Sun
8 h
Humidity
81%
Daylight
15 h
Galway, Ireland
Photo: Jonathan Borba · Pexels

Traveller notes on Galway in August

Notes from nearby Clifden (69 km away)

Galway doesn't have its own notes for August yet — these are about Clifden, close enough to share the season.

Clifden-forum threads on August weather and packing are consistent that Connemara stays genuinely unpredictable even at the height of summer, real odds of rain on any given day alongside stretches of proper sunshine, sometimes within the same afternoon. A light waterproof coat and sensible walking shoes are the standing packing essentials regardless of the forecast before the trip. Posters describe the town as easily worth several days on its own, plenty of shops and restaurants to fall back on if a wet spell sets in, with the wider Connemara countryside the real draw once conditions clear. Regulars visiting repeatedly in August describe genuinely enjoying the month despite the unreliable weather. Wind off the Atlantic is a near-constant feature worth factoring into any coastal walk. The record: 17.3C days feeling like 15C, 13.4C nights, an extraordinarily high 126mm across over 20 days, a 16.6C sea and 83 percent humidity.
ClifdenAugustRegular · August · 1 month ago · about Clifden · Read more on Tripadvisor ↗

Other months in Galway

Forum posters describe January in Galway as very cold, windy, and prone to rain slanting in off the Atlantic, with real potential for snow, ice, and gale-force winds on a given day. Posters are consistent, though, that a good sunny day around 10C isn't dramatically colder than an average summer day here - the range between a bad and good January day is genuinely wide. Posters flag that some attractions and B&Bs close for the month, though the surrounding countryside stays accessible, if often wet and muddy underfoot. Posters consistently recommend proper waterproofs and layers as the essential preparation, describing Irish weather as changeable enough within a single day that flexible clothing matters more than any single forecast. Posters generally rate January as workable with the right gear, but genuinely one of Galway's harsher months.
Tripadvisor community · January · 1 month ago · Read more on Tripadvisor ↗
July in Galway runs to the high teens — around 18°C on average, occasionally into the mid-20s — and the forum's honesty is about rain rather than heat: July can be rainier than May while being warmer, and rain gear is the one thing every poster insists on whatever the month. The record puts it at about fourteen wet days. Their framing is the useful part, though: you will get beautiful days too, and the standing local line is that there is no such thing as bad weather, only bad clothing. A light jacket and a sweater for the evenings.
Tripadvisor community · July · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Galway's card on the map.

Galway climate normals — August

Daytime high18°C / 65°F😎 nice
Nighttime low13°C / 55°F
Feels like (high)17°C / 63°F
Sea temperature18°C / 64°F🧊 bracing
Rainfall104 mm / 4.1 in🌧 rainy
Rainy days16 days
Humidity81%💦 very humid
Dew point12°C / 54°F
Sunshine8 h/day
Daylight14.7 h
Wind21 km/h / 13 mph
Air quality (US AQI)36🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Galway in August

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsGalway Races, Summer holidays in Ireland, school holidays in 7 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Galway's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherGalway's weather peaks May–July.

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Best weatherFair weatherToughest weather

What's on in Galway in August

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Festival

    Galway Races

    25 Jul – 4 Aug · usuallySporting eventCrowdedBook early

    Seven days at Ballybrit from the last Monday of July, and the city runs on it: shuttle buses, hats, and hotel rates that treble. Ladies' Day on the Thursday is the one that fills the trains. Source ↗

What's on around the world in August →

Nearby, and something's on

Within 300 km of Galway — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Galway?

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Galway in August — FAQ

Is August a good time to visit Galway?
August in Galway: nice, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Galway on SeasonMap's comfort score (81/100).
What is the weather like in Galway in August?
In August, Galway averages a daily high of 18.2°C and a low of 12.9°C, with about 104.1 mm of rain over roughly 16.4 rainy days.
What is the air quality in Galway in August?
Galway has a mean US Air Quality Index of about 36 in August.

Within 300 km: Dingle's Blasket Islands boats around 1 Apr – 30 Sep, and Belfast's Belfast Mela on 22–30 Aug.