Marlo – current water temperature and swimming conditions

Water Temperature in Marlo: 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

While water temperatures in Marlo declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, Sea water temperature in Marlo will be 17.9°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

Marlo sits where the Snowy River meets the Bass Strait on the East Coast of Victoria, and water temperatures here reflect the cooler southern ocean conditions. In summer, the sea and river mouth usually sit around 18–22 °C, which feels refreshing but comfortable for swimming on warm days. Autumn often stays mild, with temperatures commonly between 16–20 °C, while spring is cooler at roughly 14–18 °C as the water gradually warms after winter. During winter, water temperatures typically drop to about 11–14 °C, which is cold and generally suits only short dips or swimmers wearing wetsuits.