Cassino Beach — Water Temperature in December

Water Temperature Range

19°C

minimum

22°C

average

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

14°C

Average Day Air Temperature

26°C

Precipitation Amount per Month

150 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

7 hrs

Average Wind Speed

10 km/h

Average Humidity

77%

At such water and air temperatures, swimming is pleasant and refreshing rather than hot. After you get in, it feels comfortable, and you’ll warm up quickly when you come out.

Water Temperature in Nearby Locations

Rio Grande