Island Bay — Water Temperature in January

Water Temperature Range

14°C

minimum

17°C

average

20°C

maximum

Water Temperature Chart for January

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

	2026	2025	2024	2023
JAN 1	16°C	15°C	18°C	16°C
JAN 2	15°C	15°C	15°C	19°C
JAN 3	15°C	15°C	15°C	16°C
JAN 4	15°C	16°C	15°C	19°C
JAN 5	16°C	16°C	16°C	20°C
JAN 6	15°C	16°C	16°C	18°C
JAN 7	15°C	15°C	16°C	17°C
JAN 8	15°C	15°C	16°C	18°C
JAN 9	15°C	15°C	17°C	20°C
JAN 10	16°C	15°C	16°C	18°C
JAN 11	15°C	15°C	17°C	16°C
JAN 12	15°C	15°C	16°C	19°C
JAN 13	16°C	15°C	16°C	17°C
JAN 14	16°C	15°C	17°C	17°C
JAN 15	15°C	15°C	17°C	19°C
JAN 16	16°C	15°C	17°C	19°C
JAN 17	16°C	14°C	17°C	18°C
JAN 18	17°C	15°C	17°C	17°C
JAN 19	17°C	15°C	17°C	16°C
JAN 20	17°C	15°C	17°C	17°C
JAN 21	16°C	15°C	16°C	18°C
JAN 22	16°C	15°C	16°C	20°C
JAN 23	15°C	15°C	16°C	17°C
JAN 24	15°C	15°C	16°C	19°C
JAN 25	16°C	15°C	16°C	17°C
JAN 26	16°C	16°C	16°C	20°C
JAN 27	16°C	16°C	17°C	20°C
JAN 28	16°C	17°C	16°C	18°C
JAN 29	16°C	16°C	16°C	17°C
JAN 30	16°C	16°C	17°C	18°C
JAN 31	16°C	16°C	16°C	20°C

Climate and Swimming Opportunities in Island Bay in January

Average Day Air Temperature

23°C

Average Night Air Temperature

13°C

Precipitation Amount per Month

75 mm

Number of Rainy Days

Daylight per Day

15 hrs

Sunshine per Day

8 hrs

Average Wind Speed

23 km/h

Average Humidity

78%

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.