San Antonio Este — Water Temperature in March

Water Temperature Range

14°C

minimum

18°C

average

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

March: Climate and Swimming Opportunities

Average Night Air Temperature

11°C

Average Day Air Temperature

22°C

Precipitation Amount per Month

18 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

8 hrs

Average Wind Speed

24 km/h

Average Humidity

51%

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.