Yellow Sea Water Temperature Today & Regional Overview
We find every place where you can swim and show you the water temperature there today and throughout the year.
Current Water Temperature
The water temperature in the Yellow Sea today ranges from 16.8°C (Dalian, China) to 24.2°C (Shanghai, China).
As of today, the minimum water temperature in the Yellow Sea ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Sea Temperature Trends
Over the past month, the water temperature in the Yellow Sea has increased by 8°C. In general, the sea water temperature remains within the statistical range for this time of year.
Water Temperature and Swimming Conditions Throughout the Year
| Month | Min | Max |
|---|---|---|
| January | -2°C | 15°C |
| February | -3°C | 12°C |
| March | -2°C | 21°C |
| April | 2°C | 22°C |
| May | 6°C | 25°C |
| June | 13°C | 28°C |
| July | 18°C | 32°C |
| August | 20°C | 33°C |
| September | 17°C | 31°C |
| October | 11°C | 28°C |
| November | 6°C | 25°C |
| December | -1°C | 21°C |
The Yellow Sea experiences a marked seasonal cycle in surface water temperature driven by its shallow depth and mid-latitude location. In winter (December–February) temperatures typically fall to about 0–8 °C along most coasts, with the northernmost areas and enclosed Bohai Bay occasionally approaching freezing and forming patchy ice. Spring (March–May) sees a steady rise, usually reaching about 6–16 °C as waters warm. Summer (June–August) brings the warmest conditions, with coastal and southern parts commonly between 19–28 °C, making the sea at its most comfortable for bathing. Autumn (September–November) temperatures decline again to roughly 10–20 °C as cooling progresses toward winter. Local variations are important: shallower bays warm and cool more rapidly than open areas, and currents and river inflows can modify temperatures near estuaries.
Swimming Conditions
Swimming in the Yellow Sea is permitted and popular seasonally, particularly at beaches along the Chinese and Korean coasts during the warm summer months when surface temperatures exceed about 20 °C and are pleasant for recreational bathing. However, whether swimming is advisable depends on more than temperature. Water quality, coastal pollution, strong tides and currents, the presence of jellyfish in summer, and weather events such as typhoons can restrict safe swimming even when temperatures are warm. Many municipalities designate official swimming seasons, provide lifeguards, and monitor water quality; outside those times, lower temperatures and additional hazards make swimming uncomfortable or unsafe. Visitors should follow local guidance and notices rather than relying on temperature alone.