Galway, like the rest of Ireland, has a year-round mild, moist, temperate and changeable climate. Extreme temperatures are rare in Galway. In the winter the daytime temperature usually remains above 5 or 6 degree celsius and in summer the temperature rarely gets above 25 degrees celcius.
The average January temperature in the Galway city is 6.8 °C (40.6 °F) and the average July temperature is 16.0 °C (60.8 °F). Effectively, Galway has a maritime, temperate climate. You can experience rain at any time of the year although snow is rare.
Galway has long summer days and in June and July you will have daylight from just before 4.00 AM lasting until after 11.00 PM. In mid winter the days are short - from 8.30 AM to 5.00PM but there is plenty of entertainment in Galway to while away the long winter evenings.