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Ocean Beach – current water temperature and swimming conditions

This page shows the current water temperature at Ocean Beach 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.

Ocean Beach
Ocean Beach © Cynthia Springvloed

Current Sea Water Temperature

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

The average sea water temperature today in Ocean Beach is about 20°C.

Water Temperature in Ocean Beach: 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

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

According to our forecast, Sea water temperature in Ocean Beach will be 21.0°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 1221.0°C21.5°C
Mar 1320.9°C21.5°C
Mar 1420.5°C21.3°C
Mar 1520.3°C21.3°C
Mar 1620.3°C21.8°C
Mar 1720.3°C21.5°C
Mar 1820.3°C21.5°C
Mar 1920.2°C21.5°C
Mar 2020.4°C21.5°C20.4°C
Mar 2122.3°C20.5°C
Mar 2222.0°C20.6°C
Mar 2322.3°C20.7°C
Mar 2422.3°C20.8°C
Mar 2522.0°C20.9°C
Mar 2621.3°C20.9°C
Mar 2722.0°C21.0°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 Ocean Beach 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

Ocean Beach lies just south of Denmark and faces directly into the Great Australian Bight, giving it a classic open-ocean feel with long sands and constant movement in the water. Sea temperatures here are cool and strongly seasonal. In summer, from December to February, the water usually sits around 18–21°C, which can feel quite pleasant on warm, still days. Autumn brings a gradual drop to about 16–19°C, while winter is cold and bracing, most often around 13–15°C. Spring sees a slow warm-up again, typically 15–17°C, though frequent southerly winds can keep the water feeling sharp.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January18°C21°C23°C
February18°C21°C24°C
March19°C22°C24°C
April18°C22°C24°C
May19°C21°C24°C
June17°C21°C23°C
July17°C20°C21°C
August17°C19°C20°C
September16°C18°C20°C
October16°C18°C20°C
November17°C19°C21°C
December16°C20°C22°C

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

Ocean Beach: Weather Forecast

March 21

18°C / 23°C
broken clouds: 51-84%
humidity: 77% | wind: 14 kmh

March 22

17°C / 19°C
light rain
humidity: 74% | wind: 25 kmh

March 23

17°C / 17°C
overcast clouds: 85-100%
humidity: 78% | wind: 22 kmh

March 24

17°C / 19°C
overcast clouds: 85-100%
humidity: 72% | wind: 18 kmh

Local Water Conditions and Nearby Spots

Nearby Beaches and Water Temperatures

Prawn Rock Dog Beach

⭐ 3.9/5
20.5°C

Black Hole Rock

⭐ 3.4/5
19.8°C

Ocean Beach

⭐ 5.0/5
20.8°C

Mcgeary's Rock

⭐ 3.0/5
21.0°C

Anvil Beach

⭐ 3.9/5
21.5°C

Lights Beach

⭐ 3.6/5
20.6°C

Greens Pool

⭐ 4.3/5
20.9°C

Elephant Cove

⭐ 3.3/5
19.9°C

Swimming Conditions

Swimming at Ocean Beach is allowed, but conditions mean it’s better suited to confident swimmers. The beach is exposed, with regular swell, powerful waves, and currents that can be strong, especially outside settled summer weather. On calm summer days, swimming can be refreshing and enjoyable, but it’s usually best done close to shore and with care. Many people prefer a wetsuit for longer swims, even in warmer months. In spring and autumn, swims are generally short, while winter swimming is mainly for experienced locals. Overall, Ocean Beach offers a raw southern-ocean swimming experience, ideal for those comfortable with cooler water and energetic coastal conditions rather than relaxed, sheltered bathing.

🏄‍♀️ Nearby Surf Spots and Water Temperatures

Wilsons Inlet

⭐ 2/5
20.6°C

Ocean Beach

⭐ 3/5
19.3°C

Lights Beach

⭐ 2/5
20.2°C

Frequently Asked Questions

What is the sea water temperature in Ocean Beach today?
Sea water temperature in Ocean Beach in the Great Australian Bight today is 20°C.
What is the water temperature in Ocean Beach during summer?
During summer, the water temperature in Ocean Beach typically ranges from 16°C to 24°C.
What is the water temperature in Ocean Beach during autumn?
During autumn, the water temperature in Ocean Beach typically ranges from 18°C to 24°C.
What is the water temperature in Ocean Beach during spring?
During spring, the sea water temperature in Ocean Beach typically ranges from 16°C to 21°C.
What is the water temperature in Ocean Beach during winter?
During winter, the sea water temperature in Ocean Beach typically ranges from 17°C to 23°C.
Which beaches are popular in the Ocean Beach area?
Some of the most popular beaches in the Ocean Beach area include: Prawn Rock Dog Beach, Black Hole Rock, Mcgeary's Rock, Ocean Beach, Anvil Beach.
What are the nearest surf spots to Ocean Beach?
Some of the closest surf spots near Ocean Beach include Wilsons Inlet, Ocean Beach, Lights Beach.