Weather can make or break a road trip, so here's some data about year-round temperatures in Tipperary to help you plan yours: The hottest months are usually October and November, with an average temperature of 30°C, while the coldest months are July and June, with an average of 24°C. The rainiest months in Tipperary are January, December, February and March, with each month seeing an average of 264 mm of rainfall.