Ireland
Galway in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Galway in August is climatically well suited to city breaks. The average daily high is around 19 °C, and the sea is about 16 °C. With about 18 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
47/100 · #2
Warmth
#2
Dryness
#7
Sun
#4
Sea warmth
#1
Published best categories: City break, Active
Galway · AugustPhoto: Wolfgang Glock · CC BY-SA 3.0Climate facts
- Average high
- 19 °C
- Average low
- 11 °C
- Sea
- 16 °C
- Rainy days (est.)
- 18 rainy days (est.)
- Sun (est.)
- 5 h/day
- Humidity
- 83 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| July | 20 | 11 | 19 | 94 | 5.6 | 80 | 3.3 | 16 | 48 |
| August (selected) | 19 | 11 | 18 | 103 | 4.8 | 83 | 3.3 | 16 | 47 |
| September | 17 | 10 | 17 | 87 | 3.6 | 86 | 3.4 | 15 | 40 |
How do the previous and next months compare?
Baseline: August (47/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| July | +1 | +0.5 °C | +0.1 °C | +0.6 | -8.7 mm | +0.8 h | -2.4 % | ±0 m/s | -0.5 °C |
| September | -7 | -2.1 °C | -1.7 °C | -1.9 | -15.5 mm | -1.2 h | +3 % | +0.1 m/s | -0.8 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Galway in August?
The average daily high is around 19 °C, with an average daily low of about 11 °C.
Can you swim in Galway in August?
The sea is about 16 °C (cold).
Does it rain a lot in Galway in August?
The curated estimate is about 18 rainy days per month, not a directly measured long-term average. Total precipitation averages around 103 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Galway?
No month in Galway reaches the threshold for a clear recommendation in the climate score; the month comparison above shows the differences.