Weymouth — Water Temperature, Sea Conditions & Trends

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature Chart Over the Last 30 Days

Currently, the sea water temperature at this location matches the average for this day in previous years.

According to our forecast, Water temperature in Weymouth will be 14.4°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

Weymouth sits on the sheltered southern coast of England, backing onto a broad sandy bay and forming part of Dorset’s coastline. The sea here is influenced by the relatively mild maritime climate of the English Channel, so water temperatures are cooler than summer air temperatures but milder than many northern coasts. Typical seasonal sea temperatures around Weymouth range from about 6–8 °C in winter, rising to roughly 8–12 °C in spring. In summer the water commonly warms to around 15–19 °C, with the warmest weeks occasionally approaching 20 °C during heatwaves. Autumn sees a gradual cooling, with temperatures generally falling to around 11–15 °C. Local conditions such as wind, tides and spring-summer sunshine mean daily values can vary, and sheltered parts of the bay warm slightly sooner than exposed headlands.