Merimbula – current water temperature and swimming conditions

Water Temperature in Merimbula: Daily Trends, Historical Records, and Forecast

⚠️ This is cool water that may feel brisk on entry. Swimming is usually limited to short sessions, and prolonged stays can become uncomfortable without thermal protection. Many swimmers choose a wetsuit, especially for surfing or open-water swimming.

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 past 30 days, water temperatures in Merimbula have generally increased, although a slight cooling trend has set in over the last week.

According to our forecast, Sea water temperature in Merimbula will be 17.1°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

Merimbula sits on the Far South Coast of New South Wales, where lakes, beaches, and the Tasman Sea all meet, and local water temperatures reflect the cooler southern climate. In summer, ocean temperatures usually reach around 20–23 °C, while the lakes and inlet areas can feel a touch warmer on calm, sunny days. Autumn often remains pleasant, with water temperatures commonly between 18–21 °C, while spring is cooler at roughly 16–19 °C as the sea and lakes gradually warm after winter. During winter, water temperatures typically drop to about 14–16 °C, which feels cold without a wetsuit and generally limits swimming to short, brisk dips.