Marengo – current water temperature and swimming conditions

Water Temperature in Marengo: 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

Water temperatures in Marengo 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 Marengo will be 17.7°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

Marengo sits just south of Apollo Bay along the Cape Otway coastline, facing the open waters of Bass Strait, and this exposed setting keeps water temperatures on the cooler side year-round. In summer, the sea is usually at its most inviting, generally ranging from about 17–20°C, which feels refreshing on warm days. Autumn sees a gradual cooling to roughly 15–18°C, while winter brings colder conditions, often around 12–14°C. Spring is typically slow to warm, with water temperatures commonly sitting between 13–16°C, influenced by changing weather and swell.