Europe › Ireland › Galway
30-year normals (1991-2020)
Galway has a oceanic/humid subtropical climate, classified as Cfb in the Köppen system. The warmest month is July with an average high of 18°C, while the coldest month is January with lows dropping to 4°C. The annual temperature range of 14°C indicates a relatively stable climate year-round.
The driest month is September with only 13 rain days and 80mm of precipitation. For travellers, September through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 65% to 65% throughout the year.
Based on temperature and rainfall data, the best months to visit Galway are May, June, July. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
Full Best Time to Visit GuideWarmest Month
18°C
July
Coldest Month
4°C
January
Driest Month
13 days
September
Annual Range
14°C
4° to 18°
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 8°C | 4°C | 16 | 4h | View |
| February | 9°C | 4°C | 13 | 5h | View |
| March | 10°C | 4°C | 14 | 7h | View |
| April | 12°C | 6°C | 14 | 9h | View |
| May | 15°C | 8°C | 14 | 10h | View |
| June | 17°C | 11°C | 14 | 10h | View |
| July | 18°C | 12°C | 15 | 9h | View |
| August | 18°C | 12°C | 15 | 8h | View |
| September | 16°C | 11°C | 13 | 7h | View |
| October | 13°C | 8°C | 15 | 5h | View |
| November | 10°C | 6°C | 15 | 4h | View |
| December | 8°C | 4°C | 16 | 3h | View |
January
16 rain days, 4h sun
February
13 rain days, 5h sun
March
14 rain days, 7h sun
April
14 rain days, 9h sun
May
14 rain days, 10h sun
June
14 rain days, 10h sun
July
15 rain days, 9h sun
August
15 rain days, 8h sun
September
13 rain days, 7h sun
October
15 rain days, 5h sun
November
15 rain days, 4h sun
December
16 rain days, 3h sun
Galway in July
Data Sources for Galway
Climate normals represent 30-year averages (1991-2020). Individual years may vary.