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Windy Harbour – current water temperature and swimming conditions

This page shows the current water temperature at Windy Harbour 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.

Windy Harbour
Windy Harbour © Anna Beiboer

Current Sea Water Temperature

20.5°C
Today
20.2°C
Yesterday
20.4°C
A Week Ago

The average sea water temperature today in Windy Harbour is about 21°C.

Water Temperature in Windy Harbour: 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

From February 18 to March 20

While water temperatures in Windy Harbour declined overall during the past month, they have shown a noticeable rebound over the last week.

According to our forecast, Sea water temperature in Windy Harbour will be 21.6°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 1221.1°C21.5°C
Mar 1321.1°C21.5°C
Mar 1420.4°C21.3°C
Mar 1520.3°C21.3°C
Mar 1620.3°C21.8°C
Mar 1720.3°C21.8°C
Mar 1820.2°C21.5°C
Mar 1920.2°C22.0°C
Mar 2020.5°C22.0°C20.5°C
Mar 2121.7°C20.7°C
Mar 2222.0°C20.8°C
Mar 2322.0°C21.0°C
Mar 2422.3°C21.1°C
Mar 2521.7°C21.3°C
Mar 2622.0°C21.4°C
Mar 2721.7°C21.6°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 Windy Harbour 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

Windy Harbour sits on a remote stretch of the far south-west coast, where the Indian Ocean meets rugged headlands and long sandy beaches. Despite the name, conditions can be surprisingly calm on the right day. Water temperatures here are cool but a touch milder than along the Great Australian Bight. In summer, from December to February, the sea usually ranges between 19–22°C, making it quite comfortable for swimming during settled weather. Autumn brings a gradual cooling to around 17–20°C. Winter is colder and more bracing, typically 14–16°C, while spring sees a slow rise again to about 16–18°C, though wind can still add a chill.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January18°C21°C23°C
February19°C21°C24°C
March19°C22°C25°C
April18°C22°C24°C
May19°C21°C24°C
June17°C20°C22°C
July16°C20°C21°C
August17°C18°C20°C
September16°C18°C20°C
October16°C18°C20°C
November16°C19°C21°C
December17°C20°C23°C

* Click on a month to view detailed water temperature data.

Windy Harbour: Weather Forecast

March 21

16°C / 27°C
few clouds: 11-25%
humidity: 72% | wind: 25 kmh

March 22

17°C / 27°C
clear sky
humidity: 64% | wind: 29 kmh

March 23

15°C / 25°C
clear sky
humidity: 70% | wind: 25 kmh

Local Water Conditions and Nearby Spots

Nearby Beaches and Water Temperatures

Cathedral Rock Beach

⭐ 3.6/5
20.4°C

Windy Harbour Beach

⭐ 3.5/5
20.5°C

Salmon Beach

⭐ 2.5/5
21.4°C

Gardner Beach

⭐ 3.0/5
20.1°C

Pebbley Beach

⭐ 3.5/5
21.0°C

Swimming Conditions

Swimming at Windy Harbour is allowed, but it’s best approached with a bit of caution. The coastline is exposed, and swell and currents can be strong when the ocean is up. On calm summer days, swimming can be very enjoyable, with clear water and a sandy shoreline providing easy entry. Sheltered pockets near the river mouth or behind headlands often offer gentler conditions. In summer, most people swim without wetsuits, while spring and autumn suit shorter swims. Winter swimming is usually limited to locals or those wearing thermal gear. Overall, Windy Harbour offers rewarding swimming for confident swimmers who keep an eye on weather and respect the power of the southern Indian Ocean.

🏄‍♀️ Nearby Surf Spots and Water Temperatures

Windy Harbour

⭐ 3/5
19.6°C

Mandalay Beach

⭐ 3/5
21.1°C

Hush Hush Beach

⭐ 3/5
20.6°C

Location, Type and Nearby Places

Address: Shire of Manjimup

Place Tags:BeachSurf SpotCoastal Town

Water Temperature in Nearby Places

Frequently Asked Questions

What is the sea water temperature in Windy Harbour today?
Sea water temperature in Windy Harbour in the Indian Ocean today is 21°C.
What is the water temperature in Windy Harbour during summer?
During summer, the water temperature in Windy Harbour typically ranges from 17°C to 24°C.
What is the water temperature in Windy Harbour during autumn?
During autumn, the water temperature in Windy Harbour typically ranges from 18°C to 25°C.
What is the water temperature in Windy Harbour during spring?
During spring, the sea water temperature in Windy Harbour typically ranges from 16°C to 21°C.
What is the water temperature in Windy Harbour during winter?
During winter, the sea water temperature in Windy Harbour typically ranges from 16°C to 22°C.
Which beaches are popular in the Windy Harbour area?
Some of the most popular beaches in the Windy Harbour area include: Cathedral Rock Beach, Windy Harbour Beach, Salmon Beach, Gardner Beach, Pebbley Beach.
What are the nearest surf spots to Windy Harbour?
Some of the closest surf spots near Windy Harbour include Windy Harbour, Mandalay Beach, Hush Hush Beach.