What's the temperature in Jeju Island, South Korea in four seasons?

The climate of Jeju Island is dry and windy in winter and wet and rainy in summer. The annual average temperature is about 16℃, the highest temperature in summer is 33.5℃, and the lowest temperature in winter is 1℃. Jeju Island is located near the 33rd latitude line, but it has the characteristics of southern climate. It is the place with the highest average temperature and the most precipitation in Korea. Jeju Island has a mild climate and is known as Hawaii of South Korea.