Guerilla Bay – current water temperature and swimming conditions

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

⚠️ Water in this range feels cool but still manageable for many swimmers. Short to moderate swims are comfortable, especially in warm weather. Some people may prefer a wetsuit for longer stays, particularly when swimming actively or outside peak summer conditions.

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 Guerilla Bay have generally increased, although a slight cooling trend has set in over the last week.

According to our forecast, Sea water temperature in Guerilla Bay will be 18.4°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

Guerilla Bay lies on the Far South Coast of New South Wales between Batemans Bay and Moruya, opening directly onto the Tasman Sea. Water temperatures here are noticeably cooler than further north, with a clear seasonal pattern. In summer, the ocean usually sits around 20–23 °C, which feels refreshing and comfortable for swimming on warm days. Autumn often remains mild, with temperatures commonly between 18–21 °C, while spring is cooler at roughly 16–19 °C as the sea slowly warms after winter. During winter, water temperatures typically drop to about 14–16 °C, which can feel very cold without a wetsuit and limits most swims to short, bracing dips.