Mosman Park — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Mosman Park (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 Mosman Park help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Mosman Park in the Indian Ocean today is 18°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people.
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
Water temperature in Mosman Park today is lower than both a week ago and a month ago. 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 Mosman Park will be 19.5°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 26 | 18.6°C | 20.8°C | |
| JUN 27 | 18.6°C | 21.0°C | |
| JUN 28 | 18.6°C | 21.3°C | |
| JUN 29 | 18.4°C | 21.0°C | |
| JUN 30 | 18.2°C | 19.8°C | |
| JUL 1 | 18.1°C | 19.3°C | |
| JUL 2 | 18.1°C | 19.5°C | |
| JUL 3 | 18.0°C | 19.5°C | |
| JUL 4 | 17.7°C | 19.5°C | 17.7°C |
| JUL 5 | 20.5°C | 18.0°C | |
| JUL 6 | 20.8°C | 18.2°C | |
| JUL 7 | 20.5°C | 18.5°C | |
| JUL 8 | 20.3°C | 18.7°C | |
| JUL 9 | 20.3°C | 19.0°C | |
| JUL 10 | 20.3°C | 19.3°C | |
| JUL 11 | 20.0°C | 19.5°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
Mosman Park is a riverside suburb of Perth on the Swan River with easy access to both sheltered river waters and the nearby Indian Ocean coastline. Water conditions reflect tidal movement in the river and seasonal changes in the ocean. Average water temperatures in the area vary through the year: in summer (December–February) surface temperatures commonly sit between 20°C and 24°C, autumn (March–May) typically sees 18°C to 22°C, winter (June–August) waters cool to about 15°C to 17°C, and spring (September–November) ranges from roughly 16°C to 21°C. Shallow river areas can warm slightly above these figures on calm, sunny days, while wind and swell on the ocean side may produce cooler, choppier conditions.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 20°C | 22°C | 24°C |
| February | 20°C | 23°C | 26°C |
| March | 20°C | 23°C | 26°C |
| April | 19°C | 22°C | 24°C |
| May | 19°C | 22°C | 24°C |
| June | 18°C | 21°C | 23°C |
| July | 17°C | 20°C | 22°C |
| August | 17°C | 19°C | 21°C |
| September | 16°C | 19°C | 21°C |
| October | 16°C | 19°C | 21°C |
| November | 17°C | 19°C | 22°C |
| December | 18°C | 21°C | 24°C |
* Click on a month to view detailed water temperature data.
Mosman Park: Weather Forecast
July 5
July 6
July 7
July 8
Location, Beaches & Local Information
Nearby Beaches & Facilities
South Cottesloe Beach
Cottesloe Beach
North Cottesloe
North Cottesloe Beach
Grant Street Beach
Mosman Beach
Leighton Beach Dog Exercise Area
Leighton Beach
Port Beach
Swimming Conditions
Swimming around Mosman Park suits a range of preferences, from gentle river laps to ocean swims at nearby beaches. The sheltered riverbanks attract families, paddleboarders and casual swimmers, especially when temperatures are in the high teens to low twenties °C. For beach bathing and surf at nearby Cottesloe or Leighton, conditions are most comfortable in late summer and early autumn when sea temperatures reach the low to mid-twenties °C; winter swims feel brisk when waters are near 15°C to 17°C and some swimmers choose wetsuits. Lifeguard patrols and facilities are present at popular ocean beaches, while river users should be aware of boat traffic, currents near channels and variable water clarity. Overall, Mosman Park provides accessible year-round swimming options, with comfort largely determined by water temperature.