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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

19.4°C
Today
19.6°C
Yesterday
19.9°C
A Week Ago

The average sea water temperature today in Maslin Beach is about 19°C.

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

⚠️ Water in this range feels cool but still manageable for many swimmers. Short to moderate swims are comfortable, especially in warm weather. Some people may prefer a wetsuit for longer stays, particularly when swimming actively or outside peak summer conditions.

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 April 6 to May 6

Water temperatures in Maslin 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 Maslin Beach will be 18.2°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
Apr 2820.0°C20.3°C
Apr 2919.9°C20.3°C
Apr 3019.9°C18.8°C
May 119.9°C18.8°C
May 219.9°C18.8°C
May 319.8°C18.5°C
May 419.9°C18.3°C
May 519.6°C17.8°C
May 619.4°C17.8°C19.4°C
May 717.7°C19.2°C
May 817.7°C19.1°C
May 917.7°C18.9°C
May 1018.0°C18.7°C
May 1118.0°C18.6°C
May 1217.7°C18.4°C
May 1317.7°C18.2°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

May 7

12°C / 14°C
broken clouds: 51-84%
humidity: 64% | wind: 18 kmh

May 8

14°C / 17°C
light rain
humidity: 81% | wind: 14 kmh

May 9

13°C / 17°C
clear sky
humidity: 75% | wind: 11 kmh

May 10

14°C / 18°C
clear sky
humidity: 66% | wind: 11 kmh

Local Water Conditions and Nearby Spots

Nearby Beaches and Water Temperatures

Maslin Beach

⭐ 4.6/5
19.9°C

Dog Beach/Off Lead

⭐ 4.0/5
19.2°C

Port Willunga Beach

⭐ 5.0/5
19.1°C

Moana Beach

⭐ 5.0/5
19.1°C

Seaford Beach

⭐ 3.9/5
17.9°C

Robinson Point

⭐ 3.9/5
18.7°C

Aldinga Beach

⭐ 5.0/5
19.5°C

Port Noarlunga South

⭐ 5.0/5
18.8°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
18.6°C
1 km away 📍 Beach and reef

Maslin Beach

⭐ 2/5
19.2°C
1 km away 📍 Beach and reef

North Moana Beach

⭐ 2/5
19.2°C

Gull Rock

⭐ 3/5
19.3°C

South Moana Reefs

⭐ 3/5
19.9°C

Seaford Reef

⭐ 2/5
18.2°C

Triggs Beach Adelaide

⭐ 2/5
19.9°C

Aldinga Beach

⭐ 2/5
18.9°C

South Port Adelaide

⭐ 2/5
19.8°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 19°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.