Water temperature in Walton Bay

This data the coastal Walton Bay 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 Walton Bay

Water temperature in Walton Bay today is 17.9°C. Based on our historical data over a period of ten years, the warmest water in this day in the Bristol Channel near Walton Bay was recorded in 2023 and was 19.2°C, and the coldest was recorded in 2015 at 16.7°C. Sea water temperature in Walton Bay is expected to drop to 17.1°C in the next 10 days. September average water temperature in Walton Bay is 17°C, the minimum temperature is 14.7°C, and the maximum is 20.2°C.

Throughout the year, the water temperature in Walton Bay does not rise above 20°C and therefore is not suitable for comfortable swimming. But on some days of July, August, September, the water temperature warms up to 20°C and above. The average water temperature in Walton Bay in winter reaches 7.6°C, in spring 10°C, in summer the average temperature rises to 17.5°C, and in autumn it is 14.1°C.

Walton Bay water temperature now

The sea salinity in Walton Bay is 27.67‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Walton Bay 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 Walton Bay. 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 Walton Bay. 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 Walton Bay

Walton Bay weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
12.1°C	11.7°C	11.4°C	15.7°C

12-15 h	15-18 h	18-21 h	21-24 h
18.2°C	17.9°C	15.6°C	13.5°C

Walton Bay water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Walton Bay. 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 Walton Bay 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 Walton Bay

The nearest beaches and cities from Walton Bay 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
Weston-in-Gordano	17.9°C	18°C		0.29 m
Rogerstone	17.8°C	18°C		0.32 m
Avonmouth	17.7°C	18°C		0.13 m
Chittening	17.7°C	19°C		0.13 m
Penarth	18.4°C	18°C		0.67 m
Burnham-on-Sea	18°C	18°C		0.61 m
Jackson's Bay	18.3°C	18°C		0.63 m
Highbridge	17.9°C	17°C		0.63 m
Barry	18.4°C	18°C		0.67 m
Cardiff	18.1°C	18°C		0.5 m

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Our report for Walton Bay 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.