Winters in Navan are chilly and unpredictable, with temperatures often dropping below freezing, but also experiencing mild days. Spring arrives slowly, with temperatures gradually warming up, but still experiencing cool nights. Summer is warm and pleasant, with temperatures regularly reaching the mid-20s, but can be hot at times. Autumn brings a return to cooler weather, with temperatures dropping back down to around 10C on average. The winter months are quite changeable, with days often warmer than nights, while the summer months tend to be more stable in their warmth.