Santa Monica — Water Temperature in May

Water Temperature Range

13°C

minimum

17°C

average

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

May: Climate and Swimming Opportunities

Average Night Air Temperature

13°C

Average Day Air Temperature

22°C

Precipitation Amount per Month

5 mm

Number of Rainy Days

Daylight per Day

14 hrs

Sunshine per Day

9 hrs

Average Wind Speed

14 km/h

Average Humidity

68%

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.