Water temperature in Saint Helens

This data the coastal Saint Helens sea 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 sea temperature in Saint Helens

Water temperature in Saint Helens today is 19.1°C. Based on our historical data over a period of ten years, the warmest water in this day in the English Channel near Saint Helens was recorded in 2022 and was 20°C, and the coldest was recorded in 2008 at 17.1°C. Sea water temperature in Saint Helens is expected to drop to 17.8°C in the next 10 days. September average water temperature in Saint Helens is 17.7°C, the minimum temperature is 15.9°C, and the maximum is 20.2°C.

Throughout the year, the water temperature in Saint Helens does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in Saint Helens in winter reaches 8.7°C, in spring 10°C, in summer the average temperature rises to 17.3°C, and in autumn it is 15.4°C.

Saint Helens water temperature now

The sea salinity in Saint Helens is 33.19‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Saint 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 Saint 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 Saint Helens. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Saint Helens

Saint Helens weather forecast

Current temperature and weather

Data in a table show Saint Helens temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Saint Helens.

0-3 h	3-6 h	6-9 h	9-12 h
14.6°C	14.1°C	13.7°C	16.6°C

12-15 h	15-18 h	18-21 h	21-24 h
18.7°C	18.5°C	17.3°C	16°C

Saint Helens water temperature by month

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

The nearest beaches and cities from Saint 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
Gosport	18.6°C	19°C		0.26 m
Hayling Island	18.7°C	19°C		0.4 m
Ryde	18.4°C	19°C		0.26 m
East Wittering	18.9°C	19°C		0.64 m
Chichester	18.7°C	19°C		0.44 m
West Wittering	18.7°C	19°C		0.44 m
Birdham	18.7°C	19°C		0.44 m
Emsworth	18.5°C	19°C		0.34 m
Fareham	18.3°C	19°C		0.26 m
Bosham	18.5°C	19°C		0.34 m

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Our report for Saint 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.