Oyster Bay — Water Temperature in October

Water Temperature Range

15°C

minimum

18°C

average

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

October: Climate and Swimming Opportunities

Average Night Air Temperature

12°C

Average Day Air Temperature

21°C

Precipitation Amount per Month

88 mm

Number of Rainy Days

Daylight per Day

13 hrs

Sunshine per Day

8 hrs

Average Wind Speed

17 km/h

Average Humidity

76%

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.