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.
Current Sea Water Temperature
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
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 12 | 19.6°C | 20.8°C | |
| Mar 13 | 20.2°C | 20.8°C | |
| Mar 14 | 21.6°C | 20.8°C | |
| Mar 15 | 21.4°C | 20.3°C | |
| Mar 16 | 21.1°C | 20.5°C | |
| Mar 17 | 21.1°C | 21.0°C | |
| Mar 18 | 21.0°C | 20.5°C | |
| Mar 19 | 21.0°C | 20.5°C | |
| Mar 20 | 21.0°C | 20.5°C | 21.0°C |
| Mar 21 | 20.0°C | 20.9°C | |
| Mar 22 | 20.3°C | 20.9°C | |
| Mar 23 | 20.0°C | 20.8°C | |
| Mar 24 | 20.3°C | 20.7°C | |
| Mar 25 | 20.7°C | 20.7°C | |
| Mar 26 | 20.3°C | 20.6°C | |
| Mar 27 | 19.7°C | 20.5°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
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 |
|---|---|---|---|
| January | 17°C | 21°C | 23°C |
| February | 18°C | 20°C | 23°C |
| March | 17°C | 20°C | 23°C |
| April | 16°C | 19°C | 21°C |
| May | 15°C | 17°C | 20°C |
| June | 13°C | 15°C | 17°C |
| July | 12°C | 14°C | 16°C |
| August | 11°C | 13°C | 15°C |
| September | 12°C | 14°C | 16°C |
| October | 12°C | 15°C | 17°C |
| November | 15°C | 17°C | 20°C |
| December | 16°C | 19°C | 21°C |
* Click on a month to view detailed water temperature data.
Maslin Beach: Weather Forecast
March 21
March 22
March 23
Local Water Conditions and Nearby Spots
Nearby Beaches and Water Temperatures
Maslin Beach
Dog Beach/Off Lead
Port Willunga Beach
Moana Beach
Seaford Beach
Robinson Point
Aldinga Beach
Port Noarlunga South
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
Maslin Beach
North Moana Beach
Gull Rock
South Moana Reefs
Seaford Reef
Triggs Beach Adelaide
Aldinga Beach
South Port Adelaide
Location, Type and Nearby Places
Address: City of Onkaparinga
Place Tags:BeachSurf SpotCoastal Town
Water Temperature in Nearby Places
