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Monkey Mia – current water temperature and swimming conditions

This page shows the current water temperature at Monkey Mia 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.

Monkey Mia
Monkey Mia © Andreas Poltin

Current Sea Water Temperature

21.4°C
Today
21.8°C
Yesterday
23.5°C
A Week Ago

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

Water Temperature in Monkey Mia: 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 April 6 to May 6

Water temperatures in Monkey Mia have been gradually cooling over the past month, with a further drop recorded during the last week.

According to our forecast, Sea water temperature in Monkey Mia will be 22.7°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
Apr 2823.3°C25.8°C
Apr 2923.1°C25.8°C
Apr 3023.5°C24.3°C
May 123.9°C24.0°C
May 223.8°C24.0°C
May 323.2°C24.0°C
May 423.0°C23.5°C
May 521.8°C23.5°C
May 621.4°C23.5°C21.4°C
May 723.7°C21.6°C
May 824.3°C21.8°C
May 924.3°C22.0°C
May 1024.0°C22.2°C
May 1124.0°C22.4°C
May 1223.7°C22.5°C
May 1324.0°C22.7°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 Monkey Mia 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

Monkey Mia sits within the sheltered waters of Shark Bay on Western Australia’s north-west coast, and that protection has a big impact on water temperature and swimming comfort. The sea here is warm for most of the year. In summer, from December to February, water temperatures usually sit around 26–29°C, often feeling pleasantly warm rather than refreshing. Autumn remains very comfortable at roughly 24–27°C. Winter brings only a mild drop, generally around 20–22°C, while spring warms steadily again to about 22–25°C as air temperatures rise and conditions settle.

Monthly Water Temperature Range (Min, Max & Average)

Month Min Avg Max
January22°C26°C28°C
February23°C26°C29°C
March23°C26°C30°C
April21°C25°C28°C
May21°C24°C27°C
June19°C23°C26°C
July18°C21°C23°C
August18°C20°C23°C
September19°C21°C22°C
October19°C21°C23°C
November20°C22°C25°C
December21°C24°C26°C

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

Monkey Mia: Weather Forecast

May 7

21°C / 25°C
clear sky
humidity: 50% | wind: 32 kmh

May 8

22°C / 25°C
overcast clouds: 85-100%
humidity: 49% | wind: 25 kmh

May 9

21°C / 24°C
clear sky
humidity: 43% | wind: 29 kmh

May 10

20°C / 24°C
scattered clouds: 25-50%
humidity: 45% | wind: 22 kmh

Local Water Conditions and Nearby Spots

Nearby Beaches and Water Temperatures

Monkey Mia

⭐ 4.6/5
21.1°C

Cape Rose

⭐ 3.1/5
20.9°C

Little Lagoon

⭐ 4.3/5
20.8°C

Big Lagoon

⭐ 4.3/5
21.0°C

Denham Beach

⭐ 4.6/5
20.3°C

Herald Bight

⭐ 4.3/5
21.5°C

Swimming Conditions

Swimming at Monkey Mia is allowed and popular, thanks to the calm, shallow water and gently sloping sandy shoreline. The bay is well sheltered from ocean swell, which keeps waves small and currents weak, making it suitable for relaxed swimming and floating, particularly in summer. Most people swim without wetsuits year-round due to the warm water. However, Monkey Mia is also famous for its dolphins, and strict rules apply around interactions, meaning swimming is kept separate from organised dolphin activities. Winter swimming is still comfortable for short sessions, especially on sunny days. Overall, Monkey Mia offers easy, low-stress swimming in warm, clear water, ideal for visitors looking for calm conditions in a unique and carefully managed coastal environment.

🏄‍♀️ Nearby Surf Spots and Water Temperatures

Dirk Hartog Island

⭐ 5/5
24.9°C

Steep Point

⭐ 5/5
23.8°C

Frequently Asked Questions

What is the sea water temperature in Monkey Mia today?
Sea water temperature in Monkey Mia in the Indian Ocean today is 21°C.
What is the water temperature in Monkey Mia during summer?
During summer, the water temperature in Monkey Mia typically ranges from 21°C to 29°C.
What is the water temperature in Monkey Mia during autumn?
During autumn, the water temperature in Monkey Mia typically ranges from 21°C to 30°C.
What is the water temperature in Monkey Mia during spring?
During spring, the sea water temperature in Monkey Mia typically ranges from 19°C to 25°C.
What is the water temperature in Monkey Mia during winter?
During winter, the sea water temperature in Monkey Mia typically ranges from 18°C to 26°C.
Which beaches are popular in the Monkey Mia area?
Some of the most popular beaches in the Monkey Mia area include: Monkey Mia, Cape Rose, Little Lagoon, Big Lagoon, Denham Beach.
What are the nearest surf spots to Monkey Mia?
Some of the closest surf spots near Monkey Mia include Dirk Hartog Island, Steep Point.