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

69.2

°F

November 10, 23:37

Trend:

increasing

Yesterday:

69.1°F

Tomorrow:

69.4°F

Sunrise:

05:12

Sunset:

18:49

Day Length:

13 h. 37 min.

Perth in November

Minimum:

71.4°F

Average:

73.9°F

Maximum:

75.5°F

Sea water temperature in Perth today

As of now, in Perth, the water temperature is 69.2°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.2°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 69.8°F on 2023, while the historical minimum was 65.9°F on 2016.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 69.7°F, with minimum temperature starting at 69.4°F, while the maximum might reach 70.2°F.

Daily water temperature in Perth

Date Current Year

actual* / forecast**

last year 10 years average
Oct 27 67.1°F 67.4°F 66.9°F
Oct 28 67.6°F 67.7°F 67.0°F
Oct 29 67.8°F 68.1°F 67.2°F
Oct 30 67.5°F 68.4°F 67.1°F
Oct 31 67.7°F 68.4°F 67.1°F
Nov 1 68.1°F 68.7°F 67.0°F
Nov 2 68.2°F 68.5°F 67.0°F
Nov 3 68.0°F 68.4°F 67.0°F
Nov 4 68.6°F 68.3°F 67.1°F
Nov 5 68.3°F 68.3°F 67.2°F
Nov 6 68.7°F 68.3°F 67.4°F
Nov 7 68.9°F 68.1°F 67.6°F
Nov 8 69.0°F 68.3°F 67.7°F
Nov 9 69.1°F 68.4°F 67.8°F
Nov 10 69.2°F 68.6°F 68.0°F
Nov 11 69.4°F 68.8°F 68.2°F
Nov 12 69.4°F 68.8°F 68.2°F
Nov 13 69.5°F 68.9°F 68.3°F
Nov 14 69.7°F 69.1°F 68.5°F
Nov 15 69.9°F 69.0°F 68.8°F
Nov 16 70.1°F 69.6°F 68.9°F
Nov 17 70.2°F 69.8°F 69.1°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 81 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 73.4°F in Winter, 70.8°F in Spring, 64.8°F in Summer, and 65.7°F in Autumn.