Winters in Chatham are chilly and quite unpredictable, with temperatures often dropping below freezing point but occasionally rising into double digits. As the season transitions into spring, temperatures start to stabilize around a relatively mild average of 7-11 degrees Celsius. Summer months bring warm days, sometimes reaching highs of over 25 degrees Celsius, while autumns are characterised by a gradual cooling trend, with temperatures dropping back down towards 10 degrees Celsius by October.