San Simeon — Water Temperature in March

Water Temperature Range

9°C

minimum

12°C

average

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

March: Climate and Swimming Opportunities

Average Night Air Temperature

7°C

Average Day Air Temperature

18°C

Precipitation Amount per Month

89 mm

Number of Rainy Days

Daylight per Day

12 hrs

Sunshine per Day

9 hrs

Average Wind Speed

14 km/h

Average Humidity

75%

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.