Clatworthy Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Clatworthy Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Clatworthy Reservoir today is 10.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used. 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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| OCT 28 | 11.2°C | 14.0°C | |
| OCT 29 | 11.3°C | 14.0°C | |
| OCT 30 | 11.1°C | 14.0°C | |
| OCT 31 | 10.9°C | 14.0°C | |
| NOV 1 | 10.6°C | 9.0°C | |
| NOV 2 | 10.6°C | 9.0°C | |
| NOV 3 | 10.2°C | 9.0°C | |
| NOV 4 | 10.1°C | 9.0°C | |
| NOV 5 | 9.0°C | 10.0°C | |
| NOV 6 | 9.0°C | 10.0°C | |
| NOV 7 | 9.0°C | 9.9°C | |
| NOV 8 | 9.0°C | 9.9°C | |
| NOV 9 | 9.0°C | 9.8°C | |
| NOV 10 | 9.0°C | 9.8°C | |
| NOV 11 | 9.0°C | 9.7°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 2°C | 6°C | 9°C |
| February | 3°C | 7°C | 10°C |
| March | 5°C | 9°C | 12°C |
| April | 8°C | 12°C | 15°C |
| May | 10°C | 15°C | 21°C |
| June | 12°C | 20°C | 27°C |
| July | 15°C | 22°C | 28°C |
| August | 16°C | 22°C | 27°C |
| September | 14°C | 20°C | 25°C |
| October | 10°C | 14°C | 18°C |
| November | 5°C | 9°C | 12°C |
| December | 3°C | 7°C | 10°C |
Clatworthy Reservoir: Water Temperature by Location
Clatworthy Reservoir: Weather Forecast
November 5
November 6
November 7
November 8
November 9
Location & Local Information
#Somerset
Clatworthy Reservoir in Somerset is a shallow upland reservoir so water temperatures vary with the seasons and can feel cool even in summer. Typical winter surface temperatures hover around 4–8 °C (39–46 °F). In spring and autumn the water commonly ranges from about 8–14 °C (46–57 °F), while summer peaks might reach roughly 16–22 °C (61–72 °F) in warm years; deeper or shaded parts remain colder. Temperature can change quickly with weather and wind, and thermal layering means lower depths stay markedly chillier.
Officially, open-water swimming at Clatworthy is not permitted because the reservoir is a drinking water source and there are safety and water-quality concerns; organised watersports such as sailing and angling are managed in designated areas instead. The site is still worthwhile for visitors interested in walking, birdwatching and scenic views, and it sits close to the Brendon Hills and the edge of Exmoor National Park, offering nearby trails and countryside attractions for day visits.