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 18.46°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.

65.2

°F

June 25, 06:45

Trend:

decreasing

Yesterday:

65.4°F

Tomorrow:

65.2°F

Sunrise:

07:17

Sunset:

17:21

Day Length:

10 h. 4 min.

Perth in July

Minimum:

71.7°F

Average:

73.8°F

Maximum:

75.5°F

Sea water temperature in Perth today

As of now, in Perth, the water temperature is 65.2°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 1.0°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 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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 67.8°F on 2017, while the historical minimum was 64.5°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 minimum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 65.0°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
Jun 11	65.2°F	67.6°F	66.7°F
Jun 12	65.4°F	67.4°F	66.8°F
Jun 13	64.9°F	67.6°F	66.8°F
Jun 14	65.1°F	67.2°F	66.8°F
Jun 15	65.1°F	66.8°F	66.6°F
Jun 16	65.1°F	67.0°F	66.6°F
Jun 17	65.2°F	66.8°F	66.4°F
Jun 18	64.2°F	66.9°F	66.3°F
Jun 19	63.5°F	66.7°F	66.2°F
Jun 20	64.4°F	66.9°F	66.3°F
Jun 21	64.9°F	67.0°F	66.4°F
Jun 22	65.0°F	66.8°F	66.5°F
Jun 23	65.2°F	66.8°F	66.4°F
Jun 24	65.4°F	66.6°F	66.4°F
Jun 25	65.2°F	65.4°F	66.3°F
Jun 26	65.2°F	64.8°F	66.2°F
Jun 27	65.3°F	65.2°F	66.3°F
Jun 28	65.2°F	65.7°F	66.2°F
Jun 29	65.1°F	65.6°F	66.1°F
Jun 30	64.9°F	65.5°F	65.9°F
Jul 1	65.0°F	65.2°F	66.0°F
Jul 2	64.8°F	65.2°F	65.8°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 90 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.