Ireland has famously poor weather, but it's not always raining. Weather is usually at its worst in December and January, but there is a chance of rain at any time of the year. Temperatures are mild, with the southeast usually being the sunniest, and in the season between June and August, you'll find the warmest weather and average temperatures of around 16-20 °C. On the plus side, all that rain is what makes Ireland so green and keeps the rolling hills and countryside so abundant.