Bunbury – current water temperature and swimming conditions

This page shows the current water temperature at Bunbury 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

21.4°C

Today

21.3°C

Yesterday

22.1°C

A Week Ago

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

Water Temperature in Bunbury: 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

Water temperatures in Bunbury have remained fairly stable over the past 30 days, though a cooler trend has emerged in the last week.

According to our forecast, Sea water temperature in Bunbury will be 21.9°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 12	21.6°C	21.8°C
Mar 13	21.6°C	22.0°C
Mar 14	22.1°C	21.8°C
Mar 15	21.7°C	21.5°C
Mar 16	21.1°C	22.0°C
Mar 17	21.1°C	22.0°C
Mar 18	21.1°C	21.8°C
Mar 19	21.3°C	22.0°C
Mar 20	21.4°C	22.0°C	21.4°C
Mar 21		21.7°C	21.5°C
Mar 22		22.0°C	21.5°C
Mar 23		22.0°C	21.6°C
Mar 24		22.3°C	21.7°C
Mar 25		21.7°C	21.8°C
Mar 26		22.0°C	21.8°C
Mar 27		21.7°C	21.9°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 Bunbury 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

Bunbury sits on the Perth South Coast where the Indian Ocean meets a mix of open beaches and sheltered bays, giving swimmers a good range of conditions. Water temperatures here are comfortable for much of the year. In summer, from December to February, the sea typically ranges between 20–23°C, feeling warm and inviting on sunny days. Autumn remains pleasant at around 18–21°C, while winter cools things down to roughly 15–17°C, which is still manageable for shorter swims. Spring brings a gradual warm-up again, usually sitting between 17–20°C as air temperatures rise and calmer weather returns.

Monthly Water Temperature Range (Min, Max & Average)

Month	Min	Avg	Max
January	18°C	21°C	23°C
February	19°C	21°C	24°C
March	19°C	22°C	25°C
April	18°C	22°C	24°C
May	19°C	21°C	24°C
June	17°C	20°C	22°C
July	16°C	20°C	21°C
August	17°C	18°C	20°C
September	16°C	18°C	20°C
October	16°C	18°C	20°C
November	16°C	19°C	21°C
December	17°C	20°C	23°C

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

Bunbury: 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

Bunbury Beach

⭐ 5.0/5

22.5°C

Koombana Beach

⭐ 5.0/5

20.3°C

Mindalong Beach

⭐ 4.6/5

22.1°C

Beach Park

⭐ 4.6/5

20.9°C

Dalyellup Beach

⭐ 5.0/5

22.1°C

Swimming Conditions

Swimming in Bunbury is allowed and widely enjoyed, particularly around sheltered areas like Koombana Bay. These spots are protected from heavy swell, with calmer water, sandy bottoms, and easy entry that suits families and relaxed swimmers. In summer, most people swim comfortably without wetsuits and can stay in the water for extended periods. More exposed beaches, such as Back Beach, can experience stronger waves and currents, making them better for confident swimmers only. Spring and autumn suit casual dips, while winter swimming is mainly for locals used to cooler water or those wearing light thermal gear. Overall, Bunbury offers reliable and accessible swimming conditions, combining mild water temperatures with a choice of sheltered and open-ocean beach settings.