Struisbaai — Water Temperature in December

Water Temperature Range

17°C

minimum

20°C

average

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

15°C

Average Day Air Temperature

24°C

Precipitation Amount per Month

21 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

10 hrs

Average Wind Speed

14 km/h

Average Humidity

70%

With such a ratio between the average monthly temperatures of water and air, swimming feels warm and comfortable even if the day isn’t hot. The water can feel warmer than the air, so getting out may feel a bit cool.