Sihanoukville — Water Temperature in December

Water Temperature Range

27°C

minimum

29°C

average

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

24°C

Average Day Air Temperature

31°C

Precipitation Amount per Month

25 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

7 hrs

Average Wind Speed

9 km/h

Average Humidity

73%

At such water and air temperatures, swimming feels truly comfortable and relaxing. The warm water won’t cool you down, so you can stay in for a long time without getting chilled.