Mandurah — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Mandurah (Australia). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Mandurah help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Mandurah in the Indian Ocean today is 20°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Currently, the sea water at this location is slightly cooler than average for this day in previous years.
According to our forecast, Water temperature in Mandurah 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 |
|---|---|---|---|
| JUN 1 | 20.4°C | 21.0°C | |
| JUN 2 | 20.5°C | 20.8°C | |
| JUN 3 | 20.2°C | 21.0°C | |
| JUN 4 | 20.4°C | 21.0°C | |
| JUN 5 | 20.3°C | 21.0°C | |
| JUN 6 | 19.5°C | 21.0°C | |
| JUN 7 | 19.5°C | 20.8°C | |
| JUN 8 | 19.8°C | 21.0°C | |
| JUN 9 | 19.5°C | 21.0°C | 19.5°C |
| JUN 10 | 21.0°C | 19.6°C | |
| JUN 11 | 20.8°C | 19.8°C | |
| JUN 12 | 21.0°C | 19.9°C | |
| JUN 13 | 21.3°C | 20.1°C | |
| JUN 14 | 21.0°C | 20.2°C | |
| JUN 15 | 21.3°C | 20.3°C | |
| JUN 16 | 20.8°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 nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Mandurah sits on the coast of Western Australia where the estuary meets the Indian Ocean, so water temperatures vary with season, tide and location. In summer (December–February) surface temperatures in shallow estuary channels and protected canals commonly range from about 20 °C to 24 °C, and in the warmest, sheltered spots can reach the mid-20s °C. In autumn (March–May) temperatures typically cool to around 18 °C–22 °C as water loses some heat but remains comfortable for many users. Winter (June–August) sees the coolest conditions, with averages roughly 15 °C–18 °C in open and estuarine waters, while spring (September–November) warms again into the high-teens and low-20s °C range. Open ocean beaches just off the coast are generally a few degrees cooler than sheltered estuary zones, and short-term variations occur with weather patterns, tides and inland freshwater flows.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 19°C | 22°C | 24°C |
| February | 19°C | 22°C | 25°C |
| March | 20°C | 23°C | 25°C |
| April | 19°C | 22°C | 24°C |
| May | 19°C | 22°C | 24°C |
| June | 17°C | 21°C | 22°C |
| July | 17°C | 20°C | 22°C |
| August | 17°C | 19°C | 20°C |
| September | 16°C | 18°C | 20°C |
| October | 16°C | 19°C | 21°C |
| November | 17°C | 19°C | 21°C |
| December | 18°C | 21°C | 23°C |
* Click on a month to view detailed water temperature data.
Mandurah: Weather Forecast
June 10
June 11
June 12
Location, Beaches & Local Information
Nearby Beaches & Facilities
Silver Sand Beach
Town Beach
Mandurah Beach
Halls Head Beach
Robert Point
Silver Sands Beach
Seascapes Beach
Madora Bay
Falcon Beach
Swimming Conditions
Swimming and beach holidays in Mandurah suit a range of preferences because of its mix of calm estuary waters, protected canals and bays, and nearby ocean beaches. The estuary and canals provide gentle conditions ideal for families, snorkelling, paddleboarding and learning to swim, often with clearer, warmer water than exposed beaches. Ocean-facing beaches offer surf and wider sand expanses for sunbathing, beachcombing and more active water sports, though they can be cooler and windier. Seasonal lifeguard patrols, boat ramps, cafés and accommodation close to the waterfront make Mandurah convenient for multi-day stays, while day-trip facilities like showers and picnic areas support comfortable beach-based recreation. Water quality and local conditions are variable, so swimmers often choose sheltered spots during cooler months and check local advisories when planning outings.