San Antonio Este — Water Temperature in January

Water Temperature Range

17°C

minimum

19°C

average

21°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	2026	2025	2024	2023
JAN 1	20°C	19°C	20°C	18°C
JAN 2	19°C	17°C	18°C	18°C
JAN 3	19°C	17°C	17°C	18°C
JAN 4	19°C	17°C	17°C	18°C
JAN 5	19°C	18°C	19°C	18°C
JAN 6	19°C	18°C	19°C	18°C
JAN 7	19°C	19°C	19°C	18°C
JAN 8	19°C	19°C	19°C	18°C
JAN 9	19°C	18°C	19°C	18°C
JAN 10	18°C	17°C	19°C	18°C
JAN 11	18°C	19°C	19°C	18°C
JAN 12	17°C	19°C	19°C	18°C
JAN 13	18°C	19°C	19°C	18°C
JAN 14	17°C	18°C	19°C	19°C
JAN 15	19°C	18°C	19°C	19°C
JAN 16	18°C	18°C	18°C	19°C
JAN 17	18°C	19°C	19°C	19°C
JAN 18	20°C	18°C	19°C	19°C
JAN 19	20°C	18°C	20°C	20°C
JAN 20	19°C	19°C	19°C	19°C
JAN 21	19°C	19°C	19°C	20°C
JAN 22	19°C	19°C	20°C	20°C
JAN 23	19°C	19°C	19°C	20°C
JAN 24	19°C	18°C	20°C	20°C
JAN 25	18°C	19°C	20°C	19°C
JAN 26	19°C	19°C	20°C	19°C
JAN 27	19°C	19°C	20°C	19°C
JAN 28	19°C	19°C	19°C	19°C
JAN 29	19°C	20°C	19°C	20°C
JAN 30	19°C	20°C	20°C	19°C
JAN 31	18°C	19°C	20°C	19°C

January: Climate and Swimming Opportunities

Average Night Air Temperature

14°C

Average Day Air Temperature

25°C

Precipitation Amount per Month

11 mm

Number of Rainy Days

Daylight per Day

15 hrs

Sunshine per Day

10 hrs

Average Wind Speed

27 km/h

Average Humidity

40%

At such water and air temperatures, swimming feels cool and invigorating. It’s comfortable for a quick dip, and you’ll feel fine as long as you warm up soon after.