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 22.85°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

73.1

°F

January 1, 03:18

Trend:

stable

Yesterday:

73.2°F

Tomorrow:

73.2°F

Sunrise:

05:14

Sunset:

19:26

Day Length:

14 h. 12 min.

Perth in January

Minimum:

70.6°F

Average:

73.2°F

Maximum:

75.2°F

Sea water temperature in Perth today

As of now, in Perth, the water temperature is 73.1°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 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 75.2°F on 2024, while the historical minimum was 70.6°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 maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 73.3°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
Jan 1	73.1°F	74.7°F	73.2°F
Jan 2	73.2°F	75.1°F	73.3°F
Jan 3	73.2°F	74.8°F	73.3°F
Jan 4	73.2°F	75.3°F	73.3°F
Jan 5	73.3°F	75.4°F	73.5°F
Jan 6	73.3°F	75.5°F	73.4°F
Jan 7	73.4°F	75.5°F	73.5°F
Jan 8	73.5°F	75.5°F	73.6°F
Dec 18	73.6°F	73.3°F	72.0°F
Dec 19	73.7°F	73.4°F	72.0°F
Dec 20	73.8°F	73.8°F	71.9°F
Dec 21	73.1°F	74.5°F	72.1°F
Dec 22	72.9°F	74.9°F	72.5°F
Dec 23	73.4°F	75.3°F	72.8°F
Dec 24	73.9°F	75.6°F	73.1°F
Dec 25	74.0°F	75.3°F	73.3°F
Dec 26	74.0°F	75.4°F	73.5°F
Dec 27	73.8°F	75.0°F	73.6°F
Dec 28	73.5°F	74.8°F	73.5°F
Dec 29	73.5°F	74.7°F	73.4°F
Dec 30	73.5°F	74.3°F	73.3°F
Dec 31	73.2°F	74.5°F	73.3°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 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 65.8°F in Autumn.