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 18.11°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.

64.6

°F

June 11, 05:44

Trend:

stable

Yesterday:

64.6°F

Tomorrow:

64.7°F

Sunrise:

07:13

Sunset:

17:19

Day Length:

10 h. 6 min.

Perth in June

Minimum:

71.7°F

Average:

73.7°F

Maximum:

75.5°F

Sea water temperature in Perth today

As of now, in Perth, the water temperature is 64.6°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 2.2°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

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 68.1°F on 2020, while the historical minimum was 64.9°F on 2016.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 64.5°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
May 28	66.5°F	67.3°F	67.3°F
May 29	66.1°F	67.2°F	67.1°F
May 30	66.3°F	67.2°F	67.1°F
May 31	66.4°F	67.6°F	67.2°F
Jun 1	66.2°F	67.9°F	67.3°F
Jun 2	66.4°F	67.9°F	67.4°F
Jun 3	66.1°F	68.3°F	67.3°F
Jun 4	65.8°F	68.3°F	67.3°F
Jun 5	65.8°F	68.2°F	67.2°F
Jun 6	65.2°F	67.7°F	67.0°F
Jun 7	65.4°F	67.9°F	66.9°F
Jun 8	64.7°F	67.6°F	66.8°F
Jun 9	64.8°F	68.2°F	66.8°F
Jun 10	64.6°F	67.9°F	66.8°F
Jun 11	64.6°F	67.6°F	66.8°F
Jun 12	64.7°F	67.4°F	66.9°F
Jun 13	64.8°F	67.6°F	67.0°F
Jun 14	64.7°F	67.2°F	66.9°F
Jun 15	64.5°F	66.8°F	66.8°F
Jun 16	64.5°F	67.0°F	66.7°F
Jun 17	64.3°F	66.8°F	66.6°F
Jun 18	64.3°F	66.9°F	66.5°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 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.