Galway Weather in August
Galway in August averages 19°C (66°F) during the day and 12°C (54°F) at night. This is part of the summer season, and quite a bit of rainfall is expected this month.
Rainfall in Galway in August
Historically, August sees about 20 days of rain, with a monthly average of 100 mm (3.9 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Galway in August
Expect highs of 19°C (66°F) in Galway in August, with nights dropping to around 12°C (54°F). August marks the summer season. The difference between afternoon and evening temperatures is usually noticeable. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Galway in August
You can expect a moderate amount of sunlight, with approximately 118 hours. This means a pleasant mix of sun and overcast.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July typically offers the best weather for Galway.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Galway's climate page.
Galway Temperature in August
Min Temperature
12°C (54°F)
Max Temperature
19°C (66°F)
Chance of Rain
65%
Precipitation
100 mm (3.9 in)
Rainy days
20 days
Humidity
81% *
Sunshine
118 hours *
Percentage Sunshine
30% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Galway typically stay consistent throughout August, with daily highs averaging around 19°C (66°F). Nights are cool, with lows around 12°C (54°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Galway in August
Browse day-by-day weather records for Galway spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Galway historical weather extremes in August
Based on 49 years of weather observations in Galway between 1976 and 2025, these are the recorded extremes.
- On August 8, 2003, temperatures climbed to 28°C (82°F), marking the warmest August day on record.
- The coldest August day was on August 25, 1986, with a maximum of 12°C (54°F).
- Nighttime temperatures dropped to 4°C (39°F) on August 31, 1986, marking the coldest August night on record.
- The heaviest August precipitation occurred on August 6, 1986, when 29 mm (1.1 in) of precipitation fell.
Best Places in Ireland in August
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Galway in August
For Galway in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Galway in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Galway's climate page.
Temperature Rainfall Sunshine Humidity
See the full Galway climate overview or explore weather in Ireland.
