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 18.5°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.

65.3

°F

October 15, 11:20

Trend:

stable

Yesterday:

65.4°F

Tomorrow:

65.4°F

Sunrise:

05:38

Sunset:

18:28

Day Length:

12 h. 50 min.

Perth in October

Minimum:

71.7°F

Average:

74.2°F

Maximum:

76.0°F

Sea water temperature in Perth today

As of now, in Perth, the water temperature is 65.3°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 about the same as 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 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 67.7°F on 2023, while the historical minimum was 63.7°F on 2021.

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 maximum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 65.9°F, with minimum temperature starting at 65.4°F, while the maximum might reach 66.3°F.

Daily water temperature in Perth

Date	Current Year actual* / forecast**	last year	10 years average
Oct 1	65.5°F	64.5°F	64.2°F
Oct 2	65.4°F	65.1°F	64.4°F
Oct 3	65.4°F	65.6°F	64.5°F
Oct 4	65.9°F	65.5°F	64.4°F
Oct 5	66.2°F	65.2°F	64.3°F
Oct 6	65.6°F	65.4°F	64.4°F
Oct 7	66.5°F	64.7°F	64.5°F
Oct 8	67.4°F	64.8°F	64.8°F
Oct 9	67.0°F	64.8°F	64.9°F
Oct 10	66.7°F	65.2°F	65.1°F
Oct 11	66.8°F	65.7°F	65.5°F
Oct 12	66.4°F	65.6°F	65.3°F
Oct 13	65.5°F	66.3°F	65.3°F
Oct 14	65.4°F	66.4°F	65.3°F
Oct 15	65.3°F	66.2°F	65.3°F
Oct 16	65.4°F	66.5°F	65.4°F
Oct 17	65.6°F	67.0°F	65.6°F
Oct 18	65.8°F	67.4°F	65.8°F
Oct 19	65.9°F	67.1°F	65.9°F
Oct 20	66.1°F	67.1°F	66.1°F
Oct 21	66.2°F	67.0°F	66.1°F
Oct 22	66.3°F	67.4°F	66.3°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 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 August 16, 2026, dipping to 59.8°F. The average readings by season are 73.6°F in Winter, 70.8°F in Spring, 64.7°F in Summer, and 65.8°F in Autumn.