Although Da Nang's climate can be divided into wet and dry seasons, the highest temperature in the South China Sea occurs at their extremes, between May and August. During this period, humidity can reach 85%, and the average water temperature is around +28°C.
The water temperature in the South China Sea during the winter months drops to +24°C during the day and +18°C at night. While this may be considered quite cold for locals, visitors usually find it comfortable for swimming and beach activities.
The best time to swim is from March to August when the temperature in the South China Sea is optimal for most people, and the water is calm and clear.
