Diamond Beach — Water Temperature in December

Water Temperature Range

20°C

minimum

22°C

average

27°C

maximum

Water Temperature Chart for December

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

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

Climate and Swimming Opportunities in Diamond Beach in December

Average Day Air Temperature

26°C

Average Night Air Temperature

17°C

Precipitation Amount per Month

76 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

8 hrs

Average Wind Speed

17 km/h

Average Humidity

63%

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.