Santa Clara — Water Temperature in October

Water Temperature Range

12°C

minimum

15°C

average

18°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

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

October: Climate and Swimming Opportunities

Average Night Air Temperature

12°C

Average Day Air Temperature

22°C

Precipitation Amount per Month

25 mm

Number of Rainy Days

Daylight per Day

11 hrs

Sunshine per Day

8 hrs

Average Wind Speed

10 km/h

Average Humidity

69%

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.