Cayo Santa Maria — Water Temperature in December

Water Temperature Range

24°C

minimum

27°C

average

28°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

19°C

Average Day Air Temperature

28°C

Precipitation Amount per Month

36 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

7 hrs

Average Wind Speed

9 km/h

Average Humidity

82%

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.