Redwood City — Water Temperature in June

Water Temperature Range

9°C

minimum

14°C

average

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

June: Climate and Swimming Opportunities

Average Night Air Temperature

13°C

Average Day Air Temperature

21°C

Precipitation Amount per Month

2 mm

Number of Rainy Days

Daylight per Day

15 hrs

Sunshine per Day

11 hrs

Average Wind Speed

15 km/h

Average Humidity

65%

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.