What is the current water temperature in Perth?

Q: What is the current water temperature in Perth?

As of now, in Perth, the water temperature is 18.68°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

Australia > Perth

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.

65.6

°F

June 29, 20:55

Trend:

decreasing

Yesterday:

65.7°F

Tomorrow:

65.5°F

Sunrise:

07:18

Sunset:

17:22

Day Length:

10 h. 4 min.

Perth in July

Minimum:

71.7°F

Average:

73.5°F

Maximum:

75.5°F

Sea water temperature in Perth today

As of now, in Perth, the water temperature is 65.6°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 0.5°F lower 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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. 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 67.3°F on 2017, while the historical minimum was 64.7°F on 2016.

latest data

last year

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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 65.3°F, the minimum temperature may reach 65.0°F, and the maximum might stay at 65.6°F.

Daily water temperature in Perth

Date	Current Year actual* / forecast**	last year	10 years average
Jun 15	66.8°F	67.7°F	66.7°F
Jun 16	67.0°F	67.5°F	66.7°F
Jun 17	66.8°F	67.2°F	66.5°F
Jun 18	66.9°F	67.5°F	66.5°F
Jun 19	66.7°F	67.1°F	66.5°F
Jun 20	66.9°F	66.7°F	66.5°F
Jun 21	67.0°F	66.8°F	66.5°F
Jun 22	66.8°F	66.8°F	66.6°F
Jun 23	66.8°F	66.5°F	66.4°F
Jun 24	66.6°F	65.9°F	66.3°F
Jun 25	65.4°F	65.9°F	66.2°F
Jun 26	64.8°F	66.2°F	66.2°F
Jun 27	65.2°F	66.3°F	66.3°F
Jun 28	65.7°F	66.1°F	66.1°F
Jun 29	65.6°F	66.1°F	66.1°F
Jun 30	65.5°F	65.7°F	65.9°F
Jul 1	65.6°F	65.7°F	66.1°F
Jul 2	65.4°F	65.7°F	65.9°F
Jul 3	65.2°F	65.1°F	65.7°F
Jul 4	65.1°F	64.4°F	65.6°F
Jul 5	65.1°F	64.2°F	65.6°F
Jul 6	65.0°F	64.3°F	65.5°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 6, 2018, dipping to 60.8°F. The average readings by season are 73.4°F in Winter, 70.8°F in Spring, 64.9°F in Summer, and 65.7°F in Autumn.