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 12.6°C.
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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 3 | 12.6°C | 19.7°C | |
| JUN 4 | 12.6°C | 19.7°C | |
| JUN 5 | 12.6°C | 19.7°C | |
| JUN 6 | 12.6°C | 19.7°C | |
| JUN 7 | 12.7°C | 19.7°C | |
| JUN 8 | 12.7°C | 19.7°C | |
| JUN 10 | 12.6°C | 19.7°C | |
| JUN 11 | 19.7°C | 13.0°C | |
| JUN 12 | 19.7°C | 13.3°C | |
| JUN 13 | 19.7°C | 13.7°C | |
| JUN 14 | 19.7°C | 14.0°C | |
| JUN 15 | 19.7°C | 14.4°C | |
| JUN 16 | 19.7°C | 14.7°C | |
| JUN 17 | 19.7°C | 15.1°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 | 18°C | 23°C | 28°C |
| August | 17°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
June 9
June 10
June 11
June 12
June 13
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.