Santa Monica — Water Temperature in October

Water Temperature Range

15°C

minimum

19°C

average

22°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	2025	2024	2023	2022
OCT 1	20°C	19°C	20°C	21°C
OCT 2	19°C	20°C	19°C	20°C
OCT 3	19°C	19°C	19°C	21°C
OCT 4	20°C	19°C	20°C	21°C
OCT 5	20°C	20°C	19°C	21°C
OCT 6	19°C	19°C	19°C	21°C
OCT 7	19°C	19°C	20°C	20°C
OCT 8	20°C	19°C	19°C	21°C
OCT 9	20°C	19°C	19°C	21°C
OCT 10	19°C	19°C	18°C	21°C
OCT 11	20°C	19°C	18°C	21°C
OCT 12	18°C	18°C	17°C	20°C
OCT 13	19°C	18°C	16°C	21°C
OCT 14	18°C	18°C	16°C	21°C
OCT 15	18°C	18°C	16°C	20°C
OCT 16	19°C	19°C	16°C	21°C
OCT 17	19°C	19°C	17°C	21°C
OCT 18	18°C	18°C	16°C	21°C
OCT 19	18°C	18°C	16°C	21°C
OCT 20	18°C	18°C	16°C	22°C
OCT 21	19°C	18°C	17°C	22°C
OCT 22	18°C	18°C	17°C	21°C
OCT 23	19°C	18°C	16°C	20°C
OCT 24	18°C	18°C	17°C	21°C
OCT 25	18°C	18°C	16°C	21°C
OCT 26	18°C	18°C	16°C	21°C
OCT 27	18°C	18°C	16°C	20°C
OCT 28	18°C	18°C	16°C	20°C
OCT 29	19°C	19°C	17°C	19°C
OCT 30	19°C	19°C	17°C	19°C
OCT 31	18°C	19°C	17°C	19°C

October: Climate and Swimming Opportunities

Average Night Air Temperature

14°C

Average Day Air Temperature

24°C

Precipitation Amount per Month

11 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

8 hrs

Average Wind Speed

12 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.