Water temperature in Collaroy

This data the coastal Collaroy ocean water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current ocean temperature in Collaroy

Water temperature in Collaroy today is 18.4°C. Based on our historical data over a period of ten years, the warmest water in this day in Collaroy was recorded in 2015 and was 18.6°C, and the coldest was recorded in 2018 at 15.9°C. Sea water temperature in Collaroy is expected to drop to 17.7°C in the next 10 days. September average water temperature in Collaroy is 17.8°C, the minimum temperature is 15.9°C, and the maximum is 20.1°C.

The swimming season in Collaroy lasts from November to June. During those months, Collaroy water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Collaroy in winter reaches 18.2°C, in spring 18.9°C, in summer the average temperature rises to 22.4°C, and in autumn it is 22.1°C.

Collaroy water temperature now

The ocean salinity in Collaroy is 35.19‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Collaroy for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Collaroy. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Collaroy. Data in table shown for 5 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Collaroy

Collaroy weather forecast

Current temperature and weather

Data in a table show Collaroy temperature today (5 September 2025). For more information and forecast for a few days, go to the weather forecast Collaroy.

0-3 h	3-6 h	6-9 h	9-12 h
14.6°C	13.6°C	12.7°C	16°C

12-15 h	15-18 h	18-21 h	21-24 h
16.5°C	15.8°C	14.2°C	14.6°C

Collaroy water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Collaroy. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Collaroy on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Collaroy

The nearest beaches and cities from Collaroy with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Warriewood	18.3°C	16°C		1.1 m
Manly beach	18.2°C	16°C		1.25 m
Shelly Beach	18.2°C	16°C		1.25 m
Curl Curl	18.2°C	16°C		1.25 m
Freshwater Beach	18.2°C	16°C		1.25 m
Shelley Beach	18.2°C	16°C		1.25 m
Forestville	18.1°C	16°C		1.06 m
Chinamans Beach	18.1°C	16°C		1.06 m
Manly	18.1°C	16°C		1.42 m
Clontarf	18°C	16°C		1.06 m

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Our report for Collaroy is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.