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Maslin Beach – current water temperature and swimming conditions

This page shows the current water temperature at Maslin Beach in South Australia. 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.

Maslin Beach
Maslin Beach © Vmenkov, CC BY-SA 3.0

Current Sea Water Temperature

21.0°C
Today
21.0°C
Yesterday
21.6°C
A Week Ago

The average sea water temperature today in Maslin Beach is about 21°C.

Water Temperature in Maslin Beach: Daily Trends, Historical Records, and Forecast

✅ This water feels mild to warm and is comfortable for the majority of swimmers. Swimming is enjoyable, though longer stays may feel cooler for some people, especially in windy conditions. These temperatures are well suited to family outings and active swimming, particularly on warm days.

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

Over the past 30 days, water temperatures in Maslin Beach have generally increased, although a slight cooling trend has set in over the last week.

According to our forecast, Sea water temperature in Maslin Beach will be 20.5°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 1219.6°C20.8°C
Mar 1320.2°C20.8°C
Mar 1421.6°C20.8°C
Mar 1521.4°C20.3°C
Mar 1621.1°C20.5°C
Mar 1721.1°C21.0°C
Mar 1821.0°C20.5°C
Mar 1921.0°C20.5°C
Mar 2021.0°C20.5°C21.0°C
Mar 2120.0°C20.9°C
Mar 2220.3°C20.9°C
Mar 2320.0°C20.8°C
Mar 2420.3°C20.7°C
Mar 2520.7°C20.7°C
Mar 2620.3°C20.6°C
Mar 2719.7°C20.5°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 Maslin 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

Maslin Beach sits on the southern fringe of Adelaide, facing the open waters of the Great Australian Bight, and its water temperatures reflect this exposed southern ocean setting. In summer, the sea is at its warmest, usually around 18–21°C, which feels refreshing rather than warm on hot days. Autumn brings a gradual cooling to roughly 16–19°C, while winter is noticeably colder, often sitting between 13–15°C. Spring sees a slow warm-up, with water temperatures commonly between 14–17°C, influenced by sunshine, winds and changing sea conditions.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January17°C21°C23°C
February18°C20°C23°C
March17°C20°C23°C
April16°C19°C21°C
May15°C17°C20°C
June13°C15°C17°C
July12°C14°C16°C
August11°C13°C15°C
September12°C14°C16°C
October12°C15°C17°C
November15°C17°C20°C
December16°C19°C21°C

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

Maslin Beach: Weather Forecast

March 21

20°C / 25°C
clear sky
humidity: 55% | wind: 7 kmh

March 22

20°C / 27°C
clear sky
humidity: 50% | wind: 7 kmh

March 23

23°C / 28°C
few clouds: 11-25%
humidity: 45% | wind: 7 kmh

Local Water Conditions and Nearby Spots

Nearby Beaches and Water Temperatures

Maslin Beach

⭐ 4.6/5
21.3°C

Dog Beach/Off Lead

⭐ 4.0/5
21.9°C

Port Willunga Beach

⭐ 5.0/5
20.5°C

Moana Beach

⭐ 5.0/5
20.9°C

Seaford Beach

⭐ 3.9/5
21.5°C

Robinson Point

⭐ 3.9/5
19.4°C

Aldinga Beach

⭐ 5.0/5
20.3°C

Port Noarlunga South

⭐ 5.0/5
21.1°C

Swimming Conditions

Swimming is allowed at Maslin Beach and is enjoyed during the warmer months, particularly on calm days. The long, open shoreline can offer pleasant swimming close to shore when swell is low, though the exposed coast means waves, currents and rips can form at times. There are no regular patrols, so swimmers need to assess conditions carefully before entering the water. Outside peak summer, many people choose wetsuits to stay comfortable in the cooler water. Overall, Maslin Beach offers clean, open-ocean swimming in a wide natural setting, best suited to those who are confident in the water and mindful of the southern ocean’s changing moods.

🏄‍♀️ Nearby Surf Spots and Water Temperatures

The Trough

⭐ 1/5
21.3°C
1 km away 📍 Beach and reef

Maslin Beach

⭐ 2/5
20.3°C
1 km away 📍 Beach and reef

North Moana Beach

⭐ 2/5
21.5°C

Gull Rock

⭐ 3/5
21.9°C

South Moana Reefs

⭐ 3/5
21.6°C

Seaford Reef

⭐ 2/5
20.8°C

Triggs Beach Adelaide

⭐ 2/5
19.3°C

Aldinga Beach

⭐ 2/5
19.7°C

South Port Adelaide

⭐ 2/5
20.0°C

Frequently Asked Questions

What is the sea water temperature in Maslin Beach today?
Sea water temperature in Maslin Beach in the Great Australian Bight today is 21°C.
What is the water temperature in Maslin Beach during summer?
During summer, the water temperature in Maslin Beach typically ranges from 16°C to 23°C.
What is the water temperature in Maslin Beach during autumn?
During autumn, the water temperature in Maslin Beach typically ranges from 15°C to 23°C.
What is the water temperature in Maslin Beach during spring?
During spring, the sea water temperature in Maslin Beach typically ranges from 12°C to 20°C.
What is the water temperature in Maslin Beach during winter?
During winter, the sea water temperature in Maslin Beach typically ranges from 11°C to 17°C.
Which beaches are popular in the Maslin Beach area?
Some of the most popular beaches in the Maslin Beach area include: Maslin Beach, Dog Beach/Off Lead, The Jetty - Port Willunga, Port Willunga Beach, Moana Beach.
What are the nearest surf spots to Maslin Beach?
Some of the closest surf spots near Maslin Beach include Maslin Beach, The Trough, North Moana Beach.