SeaTemperatu.re

Water temperature of the South China Sea in december Where to swim in the South China Sea in december 2025?

Several countries border the seaside of the South China Sea, including: Borneo (Kalimantan), Brunei, Cambodia, China, Hong Kong, Malaysia, Palawan island, Philippines, Singapore and Sumatra. We measure the water temperature daily in these countries and archive it in order to calculate monthly averages, like those of the month of december.

The seasonal average for the water temperature in the month of december is between 65°F and 85°F. The lowest sea temperature measured this month is 59°F and the highest is 88°F.

The sea temperature map of the South China Sea in december

The map below presents a monthly average of the water temperature of the South China Sea for the month of december for several coastal cities. You can zoom and move around on the map. By clicking on the markers, you can see sea temperature details by city in december.

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Leaflet | © OpenStreetMap contributors
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Where can you swim in the South China Sea in december?

Below, see the average temperatures measured in december in the different countries on the shores of the South China Sea.

Borneo (Kalimantan)

Sea temperature in december at the shore of the South China Sea:

85°F to 85°F

ideal swimming

Brunei

Sea temperature in december at the shore of the South China Sea:

85°F to 85°F

ideal swimming

Cambodia

Sea temperature in december at the shore of the South China Sea:

84°F

ideal swimming

China

Sea temperature in december at the shore of the South China Sea:

65°F to 77°F

pleasant swimming

Hong Kong

Sea temperature in december at the shore of the South China Sea:

70°F to 70°F

pleasant swimming

Malaysia

Sea temperature in december at the shore of the South China Sea:

83°F to 85°F

ideal swimming

Palawan island

Sea temperature in december at the shore of the South China Sea:

83°F to 85°F

ideal swimming

Philippines

Sea temperature in december at the shore of the South China Sea:

79°F to 84°F

ideal swimming

Singapore

Sea temperature in december at the shore of the South China Sea:

85°F to 85°F

ideal swimming

Sumatra

Sea temperature in december at the shore of the South China Sea:

85°F to 85°F

ideal swimming

Taiwan

Sea temperature in december at the shore of the South China Sea:

77°F to 77°F

pleasant swimming

Vietnam

Sea temperature in december at the shore of the South China Sea:

71°F to 81°F

ideal swimming

Water temperature of the South China Sea: choose another month

See monthly seasonal averages of the water temperature of the South China Sea by clicking on the links below:

Water temperature of the South China Sea in january - Minimum: 60°F/Maximum: 84°FWater temperature of the South China Sea in february - Minimum: 59°F/Maximum: 85°FWater temperature of the South China Sea in march - Minimum: 61°F/Maximum: 85°FWater temperature of the South China Sea in april - Minimum: 68°F/Maximum: 86°FWater temperature of the South China Sea in may - Minimum: 76°F/Maximum: 87°FWater temperature of the South China Sea in june - Minimum: 80°F/Maximum: 87°FWater temperature of the South China Sea in july - Minimum: 81°F/Maximum: 88°FWater temperature of the South China Sea in august - Minimum: 81°F/Maximum: 87°FWater temperature of the South China Sea in september - Minimum: 81°F/Maximum: 86°FWater temperature of the South China Sea in october - Minimum: 77°F/Maximum: 86°FWater temperature of the South China Sea in november - Minimum: 72°F/Maximum: 86°FWater temperature of the South China Sea in december - Minimum: 65°F/Maximum: 85°F
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