Water temperature in Weymouth (Dorset)

This data the coastal Weymouth 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 Weymouth

Water temperature in Weymouth today is 17.1°C. Based on our historical data over a period of ten years, the warmest water in this day in the English Channel near Weymouth was recorded in 2022 and was 18.2°C, and the coldest was recorded in 2015 at 16°C. Sea water temperature in Weymouth is expected to drop to 16.6°C in the next 10 days. September average water temperature in Weymouth is 17.3°C, the minimum temperature is 15.8°C, and the maximum is 19.4°C.

Throughout the year, the water temperature in Weymouth does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in Weymouth in winter reaches 9.7°C, in spring 9.9°C, in summer the average temperature rises to 16°C, and in autumn it is 15.5°C.

Weymouth water temperature now

The sea salinity in Weymouth is 33.75‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Weymouth 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 Weymouth. 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 Weymouth. Data in table shown for 22 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Weymouth

Weymouth weather forecast

Current temperature and weather

Data in a table show Weymouth temperature today (22 September 2025). For more information and forecast for a few days, go to the weather forecast Weymouth.

0-3 h	3-6 h	6-9 h	9-12 h
11.3°C	9.6°C	8.9°C	11.8°C

12-15 h	15-18 h	18-21 h	21-24 h
14.4°C	15.3°C	13.4°C	11.6°C

Weymouth water temperature by month

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

The nearest beaches and cities from Weymouth 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
Portland Harbour	17.1°C	15°C		0.45 m
Fortuneswell	17.1°C	15°C		0.45 m
Bowleaze Cove	17°C	15°C		0.45 m
Osmington Mills	17.1°C	15°C		0.44 m
Chesil Beach	17.1°C	15°C		0.46 m
Ringstead Bay	17.1°C	15°C		0.44 m
Overcombe	17°C	15°C		0.46 m
Durdle Door	17.2°C	15°C		0.44 m
Lulworth Cove	17.2°C	15°C		0.44 m
Worbarrow Beach	17.3°C	16°C		0.44 m

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Our report for Weymouth 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.