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 19.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| JUL 16 | 19.3°C | 21.7°C | |
| JUL 17 | 19.2°C | 21.7°C | |
| JUL 18 | 19.2°C | 21.7°C | |
| JUL 19 | 19.2°C | 21.7°C | |
| JUL 20 | 19.2°C | 21.7°C | |
| JUL 21 | 19.3°C | 21.7°C | |
| JUL 22 | 19.3°C | 21.7°C | |
| JUL 23 | 19.3°C | 21.7°C | |
| JUL 24 | 21.7°C | 19.4°C | |
| JUL 25 | 21.7°C | 19.5°C | |
| JUL 26 | 21.7°C | 19.7°C | |
| JUL 27 | 21.7°C | 19.8°C | |
| JUL 28 | 21.7°C | 19.9°C | |
| JUL 29 | 21.7°C | 20.0°C | |
| JUL 30 | 21.7°C | 20.1°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 | 15°C | 22°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
July 24
July 25
July 26
July 27
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.