San Clemente's weather is characterized by mild winters, with temperatures ranging from just above freezing in January and December to a pleasant average of around 14°C. Spring brings gradual warming, with April and May temperatures averaging 17°C, while summer months are warm but not hot, peaking at an average of 25°C in July and August. Autumn is similar to spring, with October and November temperatures averaging 19°C and 18°C respectively. The coldest month is December, with the lowest temperature recorded just above freezing, while the highest temperature occurs in September, often reaching the mid-30s Celsius. Overall, San Clemente's climate is mild year-round, making it a desirable destination for those seeking temperate weather.