Kingston upon Thames experiences a mild climate, with temperatures gradually warming up as the year progresses. Winters are cool and occasionally cold, with January and February averaging around 4-6°C, while summers are warm but not hot, peaking in July at an average of 18°C. Spring is a time of gentle warming, with March and April temperatures rising to around 7-11°C, while autumn brings a slight cooling trend, with September and October averages dipping back down to around 12-16°C. The coldest months are typically January and December, while the warmest are June, July, and August.