Flinders Island – current water temperature and swimming conditions

Water Temperature in Flinders Island: 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

Water temperatures in Flinders Island have been gradually cooling over the past month, with a further drop recorded during the last week.

According to our forecast, Sea water temperature in Flinders Island will be 14.2°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

Flinders Island sits out in the eastern Bass Strait, where clean, open water surrounds long beaches and sheltered bays, and the sea keeps a cool but clear character year-round. Water temperatures here follow a similar pattern to Tasmania’s north coast, though exposure to open strait conditions can make the water feel brisk. In summer, from December to February, sea temperatures usually range from about 16–18 °C, which is refreshing rather than warm. Autumn brings a gradual cooling to around 14–16 °C, while winter is distinctly cold, typically sitting near 11–12 °C. Spring sees a slow warm-up, with temperatures generally between 12–14 °C as calmer days become more frequent.