Florianopolis — Water Temperature in December

Water Temperature Range

21°C

minimum

24°C

average

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

20°C

Average Day Air Temperature

26°C

Precipitation Amount per Month

141 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

6 hrs

Average Wind Speed

14 km/h

Average Humidity

80%

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.