Annual Weather Averages in Shannon Airport
Shannon Airport is 40 miles from Galway, so the actual climate in Galway can vary a bit.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Galway
High Temp: 67 °F
Low Temp: 38 °F
Mean Temp: 51 °F
Precipitation: 3.51"
Humidity: 82%
Dew Point: 46 °F
Wind: 19 mph
Pressure: 29.94 "Hg
Visibility: 10 mi
January Climate & Weather Averages in Galway
High Temp: 48 °F
Low Temp: 38 °F
Mean Temp: 43 °F
Precipitation: 4.29"
Humidity: 87%
Dew Point: 40 °F
Wind: 21 mph
Pressure: 29.91 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Galway
High Temp: 49 °F
Low Temp: 38 °F
Mean Temp: 44 °F
Precipitation: 3.73"
Humidity: 84%
Dew Point: 39 °F
Wind: 21 mph
Pressure: 29.94 "Hg
Visibility: 10 mi
March Climate & Weather Averages in Galway
High Temp: 52 °F
Low Temp: 39 °F
Mean Temp: 46 °F
Precipitation: 3.28"
Humidity: 81%
Dew Point: 40 °F
Wind: 20 mph
Pressure: 29.98 "Hg
Visibility: 10 mi
April Climate & Weather Averages in Galway
High Temp: 56 °F
Low Temp: 42 °F
Mean Temp: 49 °F
Precipitation: 2.46"
Humidity: 78%
Dew Point: 42 °F
Wind: 19 mph
Pressure: 29.95 "Hg
Visibility: 11 mi
May Climate & Weather Averages in Galway
High Temp: 61 °F
Low Temp: 47 °F
Mean Temp: 54 °F
Precipitation: 2.72"
Humidity: 77%
Dew Point: 46 °F
Wind: 19 mph
Pressure: 29.97 "Hg
Visibility: 11 mi
June Climate & Weather Averages in Galway
High Temp: 65 °F
Low Temp: 52 °F
Mean Temp: 58 °F
Precipitation: 2.61"
Humidity: 77%
Dew Point: 51 °F
Wind: 18 mph
Pressure: 30.01 "Hg
Visibility: 12 mi
July Climate & Weather Averages in Galway
High Temp: 67 °F
Low Temp: 55 °F
Mean Temp: 61 °F
Precipitation: 3.01"
Humidity: 80%
Dew Point: 54 °F
Wind: 17 mph
Pressure: 29.97 "Hg
Visibility: 12 mi
August Climate & Weather Averages in Galway
High Temp: 67 °F
Low Temp: 55 °F
Mean Temp: 61 °F
Precipitation: 3.65"
Humidity: 81%
Dew Point: 54 °F
Wind: 18 mph
Pressure: 29.96 "Hg
Visibility: 12 mi
September Climate & Weather Averages in Galway
High Temp: 64 °F
Low Temp: 51 °F
Mean Temp: 58 °F
Precipitation: 3.33"
Humidity: 83%
Dew Point: 52 °F
Wind: 18 mph
Pressure: 29.98 "Hg
Visibility: 10 mi
October Climate & Weather Averages in Galway
High Temp: 58 °F
Low Temp: 47 °F
Mean Temp: 52 °F
Precipitation: 4.19"
Humidity: 85%
Dew Point: 48 °F
Wind: 19 mph
Pressure: 29.87 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Galway
High Temp: 52 °F
Low Temp: 42 °F
Mean Temp: 47 °F
Precipitation: 4.14"
Humidity: 88%
Dew Point: 44 °F
Wind: 19 mph
Pressure: 29.86 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Galway
High Temp: 49 °F
Low Temp: 39 °F
Mean Temp: 44 °F
Precipitation: 4.69"
Humidity: 88%
Dew Point: 41 °F
Wind: 20 mph
Pressure: 29.88 "Hg
Visibility: 9 mi