Water temperature in Ullswater

This data the coastal Ullswater 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 water temperature in Ullswater

Water temperature in Ullswater today is 12°C. Based on our historical data over a period of ten years, the warmest water in this day in Ullswater was 15°C, and the coldest was recorded in 2024 at 11°C. Water temperature in Ullswater is expected to be constant 12°C in the next 10 days. September average water temperature in Ullswater is 13.3°C, the minimum temperature is 9°C, and the maximum is 18°C.

Throughout the year, the water temperature in Ullswater does not rise above 20°C and therefore is not suitable for comfortable swimming. But on some days of July, the water temperature warms up to 20°C and above. The average water temperature in Ullswater in winter reaches 5°C, in spring 8°C, in summer the average temperature rises to 14.6°C, and in autumn it is 10.5°C.

Ullswater water temperature now

Current temperature and weather

Data in a table show Ullswater temperature today (15 September 2025). For more information and forecast for a few days, go to the weather forecast Ullswater.

0-3 h	3-6 h	6-9 h	9-12 h
10.7°C	11.6°C	11.2°C	11.3°C

12-15 h	15-18 h	18-21 h	21-24 h
12.4°C	12°C	11.9°C	11.5°C

Ullswater water temperature by month

These figures shows the average, minimum and maximum monthly water temperature in Ullswater. 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 Ullswater 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 Ullswater

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Our report for Ullswater 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.