Myalup – current water temperature and swimming conditions

This page shows the current water temperature at Myalup in Western 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

17.5°C

Today

17.4°C

Yesterday

17.9°C

A Week Ago

The average sea water temperature today in Myalup is about 18°C.

Water Temperature in Myalup: Daily Trends, Historical Records, and Forecast

⚠️ This is cool water that may feel brisk on entry. Swimming is usually limited to short sessions, and prolonged stays can become uncomfortable without thermal protection. Many swimmers choose a wetsuit, especially for surfing or open-water swimming.

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 September 15 to October 15

Over the past 30 days, water temperatures in Myalup have generally increased, although a slight cooling trend has set in over the last week.

According to our forecast, Sea water temperature in Myalup will be 18.4°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
Oct 7	18.0°C	18.3°C
Oct 8	17.9°C	18.5°C
Oct 9	17.9°C	18.3°C
Oct 10	17.9°C	18.5°C
Oct 11	17.8°C	18.8°C
Oct 12	17.8°C	18.3°C
Oct 13	17.6°C	18.3°C
Oct 14	17.4°C	18.3°C
Oct 15	17.5°C	18.3°C	17.5°C
Oct 16		18.5°C	17.6°C
Oct 17		17.8°C	17.8°C
Oct 18		18.3°C	17.9°C
Oct 19		18.8°C	18.0°C
Oct 20		18.8°C	18.2°C
Oct 21		18.8°C	18.3°C
Oct 22		18.8°C	18.4°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 Myalup 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

Myalup sits along a quiet stretch of the Perth South Coast, facing the open Indian Ocean with wide sand flats and a natural, undeveloped feel. Water temperatures here follow the familiar south-west pattern and are well suited to swimming through the warmer part of the year. In summer, from December to February, the sea usually ranges between 20–23°C, feeling comfortable and refreshing on hot days. Autumn cools gently to around 18–21°C, while winter is noticeably cooler, typically about 15–17°C. Spring brings a gradual warm-up again, generally sitting between 17–20°C as air temperatures rise.

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.

Myalup: Weather Forecast

October 16

15°C / 18°C

clear sky

humidity: 74% | wind: 7 kmh

October 17

13°C / 19°C

clear sky

humidity: 77% | wind: 11 kmh

October 18

13°C / 18°C

light rain

humidity: 79% | wind: 18 kmh

Local Water Conditions and Nearby Spots

Nearby Beaches and Water Temperatures

Binningup Beach

⭐ 5.0/5

17.0°C

Buffalo Beach

⭐ 3.2/5

16.2°C

Belvidere Beach

⭐ 3.9/5

18.1°C

Preston Beach

⭐ 4.2/5

17.1°C

Koombana Beach

⭐ 5.0/5

16.9°C

Bunbury Beach

⭐ 5.0/5

16.6°C

Swimming Conditions

Swimming at Myalup is allowed and enjoyed most during calm summer conditions. The beach has a sandy bottom and long, gently sloping shallows, which makes entry straightforward and suits relaxed swimming close to shore. While the coastline is open to swell, many days offer manageable conditions, especially in the mornings before winds increase. In summer, most swimmers are comfortable without wetsuits and can stay in the water for longer periods. Spring and autumn are better for shorter swims, while winter swimming is usually limited to locals accustomed to cooler water or those wearing light thermal gear. Overall, Myalup offers simple, low-key swimming in clean Indian Ocean water, ideal for people looking for space, quiet, and easy coastal access rather than busy, built-up beaches.