Shanghai — Water Temperature in December

Water Temperature Range

3°C

minimum

13°C

average

18°C

maximum

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Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2025	2024	2023	2022
DEC 1	16°C	14°C	15°C	16°C
DEC 2	15°C	14°C	14°C	15°C
DEC 3	15°C	15°C	14°C	15°C
DEC 4	15°C	15°C	14°C	15°C
DEC 5	15°C	15°C	14°C	14°C
DEC 6	15°C	14°C	14°C	14°C
DEC 7	15°C	14°C	14°C	14°C
DEC 8	14°C	14°C	14°C	14°C
DEC 9	14°C	14°C	14°C	14°C
DEC 10	14°C	13°C	14°C	14°C
DEC 11	13°C	13°C	13°C	14°C
DEC 12	14°C	14°C	13°C	14°C
DEC 13	13°C	13°C	13°C	14°C
DEC 14	13°C	14°C	13°C	13°C
DEC 15	13°C	13°C	13°C	14°C
DEC 16	13°C	13°C	13°C	14°C
DEC 17	13°C	12°C	12°C	14°C
DEC 18	13°C	13°C	12°C	13°C
DEC 19	12°C	12°C	11°C	13°C
DEC 20	12°C	12°C	11°C	13°C
DEC 21	12°C	12°C	11°C	13°C
DEC 22	12°C	12°C	11°C	13°C
DEC 23	12°C	12°C	11°C	12°C
DEC 24	11°C	12°C	11°C	10°C
DEC 25	11°C	12°C	10°C	10°C
DEC 26	11°C	12°C	10°C	10°C
DEC 27	11°C	12°C	10°C	10°C
DEC 28	10°C	11°C	10°C	10°C
DEC 29	10°C	11°C	9°C	9°C
DEC 30	10°C	11°C	10°C	9°C
DEC 31	10°C	11°C	9°C	9°C

December: Climate and Swimming Opportunities

Average Night Air Temperature

4°C

Average Day Air Temperature

11°C

Precipitation Amount per Month

53 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

5 hrs

Average Wind Speed

16 km/h

Average Humidity

74%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.