Coronado — Water Temperature in December

Water Temperature Range

14°C

minimum

15°C

average

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

December: Climate and Swimming Opportunities

Average Night Air Temperature

9°C

Average Day Air Temperature

19°C

Precipitation Amount per Month

44 mm

Number of Rainy Days

Daylight per Day

10 hrs

Sunshine per Day

7 hrs

Average Wind Speed

9 km/h

Average Humidity

66%

With such a ratio between the average monthly temperatures of water and air, swimming feels very cold and is only for cold-water enthusiasts. Most people will prefer just a brief splash, because warming up afterward can take time.