Coles Bay – current water temperature and swimming conditions

Water Temperature in Coles Bay: Daily Trends, Historical Records, and Forecast

❌ Water at this temperature feels cold and is generally suitable only for brief immersion. Swimming without a wetsuit can quickly become uncomfortable, and exposure time is usually short. These conditions are mainly suitable for experienced swimmers or those using proper thermal gear.

It’s important to note that these swimming tips and recommendations apply only in settled weather. When air temperatures drop below 20°C — and sometimes even below 25°C — swimming can feel uncomfortable, even when water temperatures are relatively high.

Water Temperature Over the Last 30 Days

Over the last 30 days, water temperatures in Coles Bay have trended upward, with conditions remaining relatively stable over the past week.

According to our forecast, Sea water temperature in Coles Bay will be 12.0°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

Coles Bay sits on Tasmania’s east coast beside the sheltered waters of Great Oyster Bay, with the Tasman Sea moderated by the presence of Freycinet Peninsula. This geography gives the area some of the most inviting water conditions in the state. Sea temperatures change gently through the year. In summer, from December to February, the water typically reaches around 17–20 °C, which feels cool but very comfortable on warm days. Autumn sees a gradual drop to about 15–17 °C, while winter is colder, usually around 11–13 °C. During spring, temperatures slowly rise again, commonly sitting between 13–15 °C as sunshine and calmer weather return.