All data are in degrees Fahrenheit

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Water temperature in Perth

Detailed information about the current water temperature in Perth. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in Perth now

74.9

°F

February 26, 20:54

Trend:

stable

Yesterday:

73.9°F

Tomorrow:

74.8°F

Sunrise:

06:03

Sunset:

18:56

Day Length:

12 h. 53 min.

Perth in March

Minimum:

71.0°F

Average:

73.6°F

Maximum:

75.3°F

Sea water temperature in Perth today

As of now, in Perth, the water temperature is 74.9°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.3°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 77.1°F on 2022, while the historical minimum was 72.4°F on 2016.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 75.1°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Perth

Date Current Year

actual* / forecast**

last year 10 years average
Feb 12 74.5°F 77.5°F 74.4°F
Feb 13 73.9°F 77.3°F 74.3°F
Feb 14 74.1°F 76.6°F 74.3°F
Feb 15 74.3°F 76.3°F 74.4°F
Feb 16 74.6°F 75.8°F 74.3°F
Feb 17 74.4°F 75.6°F 74.5°F
Feb 18 73.7°F 75.5°F 74.4°F
Feb 19 74.1°F 75.3°F 74.3°F
Feb 20 75.3°F 75.9°F 74.6°F
Feb 21 75.6°F 76.3°F 74.9°F
Feb 22 75.1°F 76.1°F 74.7°F
Feb 23 73.9°F 76.0°F 74.6°F
Feb 24 73.9°F 75.0°F 74.5°F
Feb 25 73.9°F 75.3°F 74.6°F
Feb 26 74.9°F 75.4°F 74.6°F
Feb 27 74.8°F 75.2°F 74.6°F
Feb 28 74.8°F 75.0°F 74.6°F
Mar 1 75.3°F 74.7°F 74.4°F
Mar 2 75.4°F 74.5°F 74.5°F
Mar 3 75.3°F 75.0°F 74.4°F
Mar 4 75.1°F 75.1°F 74.2°F
Mar 5 75.2°F 75.8°F 74.3°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Perth by month

In Perth, the months January through March offer comfortable swimming conditions, which amounts to 88 swimming days.
The warmest water in Perth was recorded on February 8, 2025, reaching a 78.6°F. While the coldest temperature occurred on September 11, 2025, dipping to 60.6°F. The average readings by season are 73.6°F in Winter, 70.8°F in Spring, 64.8°F in Summer, and 65.7°F in Autumn.