Port Kennedy — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Port Kennedy (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 Port Kennedy help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Port Kennedy 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 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.
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 Port Kennedy 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 Port Kennedy will be 19.1°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 | 18.9°C | 20.8°C | |
| JUN 27 | 18.8°C | 21.0°C | |
| JUN 28 | 18.8°C | 21.3°C | |
| JUN 29 | 18.9°C | 21.0°C | |
| JUN 30 | 18.9°C | 20.0°C | |
| JUL 1 | 18.8°C | 19.5°C | |
| JUL 2 | 18.5°C | 19.8°C | |
| JUL 3 | 18.3°C | 19.5°C | |
| JUL 4 | 18.0°C | 19.5°C | 18.0°C |
| JUL 5 | 20.0°C | 18.2°C | |
| JUL 6 | 20.0°C | 18.3°C | |
| JUL 7 | 20.3°C | 18.5°C | |
| JUL 8 | 20.3°C | 18.6°C | |
| JUL 9 | 19.5°C | 18.8°C | |
| JUL 10 | 19.8°C | 18.9°C | |
| JUL 11 | 20.0°C | 19.1°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
Port Kennedy sits on the temperate southwestern coast of Western Australia, facing the Indian Ocean and enjoying a maritime climate with moderate seasonal shifts in sea temperature. Typical summer water temperatures (December–February) range from about 20°C to 24°C, offering the warmest conditions for swimming. In autumn (March–May) the sea cools to roughly 18°C to 21°C as winds and swell patterns change. Winter months (June–August) bring the coolest water, commonly about 15°C to 17°C, while spring (September–November) sees a gradual rise back into the 16°C to 19°C bracket. Local weather fronts, tidal exchanges and wind-driven upwelling can cause shorter-term variability, so sea temperatures at any given day may fall outside these typical ranges.
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 | 21°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.
Port Kennedy: Weather Forecast
July 5
July 6
July 7
Location, Beaches & Local Information
Nearby Beaches & Facilities
Warnbro Beach
Warnbro Dog Beach
Port Kennedy Beach
Beacher Point
Secret Harbour Dog Beach
Secret Harbour
Waikiki Beach
Goldenn Bay Foreshore
Golden Bay
Swimming Conditions
Swimming and beach holidays in Port Kennedy are well suited to those who enjoy a quieter coastal experience with a mix of sandy shores and rocky platforms. When the ocean is in the summer range of around 20°C–24°C, conditions are generally inviting for casual swimming, snorkeling close to shore and family beach outings. Cooler months with water near 15°C–17°C are best for brisk swims or for visitors wearing a wetsuit; sheltered coves and lee-side stretches can feel milder than exposed beaches. Beach safety can vary with swell and rips, and some nearby beaches have seasonal patrols and basic visitor facilities, making them convenient for day trips. Checking current sea temperature and local surf conditions before planning extended swims will help ensure a comfortable and safe visit.