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Roaring Bay Beach – current water temperature and swimming conditions

This page shows the current water temperature at Roaring Bay Beach in Tasmania. You can view recent sea temperature trends on a 30-day chart, check typical monthly water temperature ranges, and compare today’s reading with historical averages for this date. The page also includes a 7-day water temperature forecast, nearby beaches with similar conditions, local weather information, and a summary of swimming conditions to help you assess how suitable the water is for swimming.

Roaring Bay Beach
Roaring Bay Beach © Alison Abbott

Current Sea Water Temperature

16.6°C
Today
16.5°C
Yesterday
16.8°C
A Week Ago

The average sea water temperature today in Roaring Bay Beach is about 17°C.

Water Temperature in Roaring Bay Beach: 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

From February 18 to March 20

Water temperatures in Roaring Bay Beach 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 Roaring Bay Beach will be 16.9°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Date Current Average Forecast
Mar 1217.2°C16.8°C
Mar 1317.1°C17.0°C
Mar 1416.8°C17.0°C
Mar 1516.9°C16.8°C
Mar 1616.5°C17.0°C
Mar 1716.5°C17.0°C
Mar 1816.5°C17.0°C
Mar 1916.5°C17.3°C
Mar 2016.6°C17.3°C16.6°C
Mar 2117.7°C16.6°C
Mar 2217.0°C16.7°C
Mar 2317.3°C16.7°C
Mar 2417.0°C16.8°C
Mar 2516.7°C16.8°C
Mar 2617.0°C16.8°C
Mar 2717.0°C16.9°C

* Current - Actual water temperature value

** Average - Average water temperature on this day in recent years

*** Forecast - Our water temperature forecast

Actual near-shore water temperatures in Roaring Bay Beach can vary by several degrees from the values shown, particularly after heavy rain, strong southerlies, or prolonged windy conditions. Certain wind patterns can trigger upwelling, where cooler, deeper water is pushed to the surface and replaces the warmer top layer, leading to noticeable short-term changes in water temperature.

Our water temperature forecast is produced using a proprietary mathematical model that combines real-time measurements with long-term historical patterns, local weather conditions, wind strength and direction, and air temperature specific to each coastal region. To improve accuracy, we cross-check data from nearby locations and use multiple sources, including offshore buoys, satellite-based sea surface maps, and observations provided by local authorities.

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

Roaring Bay Beach sits on Tasmania’s south-east coast, opening onto the Tasman Sea where the water is clear, cool, and strongly influenced by seasonal weather patterns. Sea temperatures here are fairly typical for the east coast of the state. In summer, from December to February, the water usually reaches around 16–18 °C, which feels refreshing and is swimmable on warm, settled days. Autumn sees temperatures ease back to roughly 14–16 °C, while winter is much colder, commonly around 11–13 °C. In spring, the sea slowly warms again, generally sitting between 13–15 °C as daylight increases and conditions improve.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January14°C17°C19°C
February15°C18°C20°C
March15°C17°C19°C
April14°C16°C18°C
May11°C14°C17°C
June11°C14°C15°C
July10°C13°C14°C
August10°C12°C14°C
September9°C12°C14°C
October9°C12°C15°C
November11°C14°C16°C
December12°C15°C18°C

* Click on a month to view detailed water temperature data.

Roaring Bay Beach: Weather Forecast

March 21

13°C / 19°C
scattered clouds: 25-50%
humidity: 80% | wind: 7 kmh

March 22

12°C / 23°C
scattered clouds: 25-50%
humidity: 70% | wind: 11 kmh

March 23

11°C / 13°C
overcast clouds: 85-100%
humidity: 67% | wind: 11 kmh

Local Water Conditions and Nearby Spots

Nearby Beaches and Water Temperatures

Little Roaring Bay Beach

⭐ 3.5/5
17.7°C

Kent Beach

⭐ 2.9/5
16.9°C

Dover Foreshore

⭐ 3.5/5
17.2°C

Dover Beach

⭐ 3.0/5
17.6°C

Eggs & Bacon Bay Beach

⭐ 3.5/5
16.6°C

Mickeys Beach

⭐ 3.5/5
16.2°C

Hopetoun Beach

⭐ 3.5/5
17.0°C

Randalls Bay Beach

⭐ 3.1/5
17.6°C

Ninepin Point Beach

⭐ 2.6/5
17.3°C

Swimming Conditions

Swimming at Roaring Bay Beach is allowed and can be quite pleasant when the weather is calm. The bay offers a degree of natural shelter, which often means smaller waves and gentler conditions compared with more exposed Tasman Sea beaches. This makes short swims and relaxed dips popular in summer, especially close to shore. Even so, the water remains cool, so most people limit their time in the sea, and wetsuits are common outside peak summer. During windy weather or larger swell, conditions can change quickly. Overall, Roaring Bay Beach offers good cold-water swimming by Tasmanian standards, best enjoyed in summer and during settled conditions.

🏄‍♀️ Nearby Surf Spots and Water Temperatures

Bruny Island - Cloudy Bay

⭐ 3/5
15.3°C

Bruny Island - Coal Point

⭐ 1/5
15.2°C
20 km away 📍 Beach and point

Bruny Island - Jawbones

⭐ 3/5
16.7°C

Bruny Island - Lagoons

⭐ 1/5
15.7°C

Bruny Island - Mabel Bay

⭐ 1/5
16.9°C

Bruny Island - Neck Bay

⭐ 1/5
16.2°C

Bruny Island - Lighthouse Bay

⭐ 1/5
17.4°C

Frequently Asked Questions

What is the sea water temperature in Roaring Bay Beach today?
Sea water temperature in Roaring Bay Beach in the Tasman Sea today is 17°C.
What is the water temperature in Roaring Bay Beach during summer?
During summer, the water temperature in Roaring Bay Beach typically ranges from 12°C to 20°C.
What is the water temperature in Roaring Bay Beach during autumn?
During autumn, the water temperature in Roaring Bay Beach typically ranges from 11°C to 19°C.
What is the water temperature in Roaring Bay Beach during spring?
During spring, the sea water temperature in Roaring Bay Beach typically ranges from 9°C to 16°C.
What is the water temperature in Roaring Bay Beach during winter?
During winter, the sea water temperature in Roaring Bay Beach typically ranges from 10°C to 15°C.
Which beaches are popular in the Roaring Bay Beach area?
Some of the most popular beaches in the Roaring Bay Beach area include: Little Roaring Bay Beach, Dover Foreshore, Kent Beach, Dover Beach, Eggs & Bacon Bay Beach.
What are the nearest surf spots to Roaring Bay Beach?
Some of the closest surf spots near Roaring Bay Beach include Bruny Island - Cloudy Bay, Bruny Island - Coal Point, Bruny Island - Jawbones.