Water temperature in St Helens

This data the coastal St Helens 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 St Helens

Water temperature in St Helens today is 12.7°C. Based on our historical data over a period of ten years, the warmest water in this day in the Tasman Sea near St Helens was recorded in 2007 and was 13.8°C, and the coldest was recorded in 2012 at 11.7°C. Sea water temperature in St Helens is expected to rise to 12.8°C in the next 10 days. September average water temperature in St Helens is 12.6°C, the minimum temperature is 11.4°C, and the maximum is 13.8°C.

Throughout the year, the water temperature in St Helens does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in St Helens in winter reaches 13.2°C, in spring 13.3°C, in summer the average temperature rises to 17.1°C, and in autumn it is 16.9°C.

St Helens water temperature now

The ocean salinity in St Helens is 35.43‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in St Helens 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 St Helens. 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 St Helens. Data in table shown for 25 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in St Helens

St Helens weather forecast

Current temperature and weather

Data in a table show St Helens temperature today (25 September 2025). For more information and forecast for a few days, go to the weather forecast St Helens.

0-3 h	3-6 h	6-9 h	9-12 h
6.6°C	8.3°C	7.6°C	12.8°C

12-15 h	15-18 h	18-21 h	21-24 h
15.7°C	15.1°C	10.8°C	6.1°C

St Helens water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in St Helens. 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 St Helens 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 St Helens

The nearest beaches and cities from St Helens 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
Scamander	12.8°C	15°C		0.79 m
Binalong Bay	12.7°C	15°C		0.98 m
Bay of Fires	12.6°C	15°C		0.74 m
Bicheno	12.5°C	6°C		0.89 m
Coles Bay	12.4°C	8°C		0.86 m
Swansea	12.2°C	8°C		0.85 m
Wineglass Bay	12.3°C	8°C		0.98 m
George Town	12.2°C	12°C		0.67 m
Beauty Point	12.2°C	12°C		0.67 m
Low Head	12.2°C	12°C		1.29 m

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St. Helens, Saint Helens

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Our report for St Helens 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.