Picnic Bay – current water temperature and swimming conditions

Water Temperature in Picnic Bay: 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 Picnic Bay 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 Picnic Bay will be 18.7°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

Picnic Bay sits within Wilsons Promontory on the East Coast of Victoria, opening onto the Bass Strait, and water temperatures here reflect the cool southern ocean. In summer, the sea usually warms to around 18–22 °C, which feels refreshing but comfortable enough for swimming on warm, settled days. Autumn often remains mild, with water temperatures commonly between 16–20 °C, while spring is cooler at roughly 14–18 °C as the ocean gradually warms after winter. During winter, temperatures typically drop to about 11–14 °C, which is cold and generally limits swimming to short dips or those wearing wetsuits.