Cheddar Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Cheddar Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Cheddar Reservoir today is 18.5°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 |
|---|---|---|---|
| AUG 26 | 18.9°C | 23.0°C | |
| AUG 27 | 18.9°C | 23.0°C | |
| AUG 28 | 18.9°C | 23.0°C | |
| AUG 29 | 18.9°C | 23.0°C | |
| AUG 30 | 18.9°C | 23.0°C | |
| AUG 31 | 18.9°C | 23.0°C | |
| SEP 1 | 18.2°C | 21.0°C | |
| SEP 2 | 18.5°C | 21.0°C | |
| SEP 3 | 21.0°C | 18.6°C | |
| SEP 4 | 21.0°C | 18.8°C | |
| SEP 5 | 21.0°C | 18.9°C | |
| SEP 6 | 21.0°C | 19.0°C | |
| SEP 7 | 21.0°C | 19.1°C | |
| SEP 8 | 21.0°C | 19.3°C | |
| SEP 9 | 21.0°C | 19.4°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 | 3°C | 7°C | 10°C |
| February | 4°C | 8°C | 11°C |
| March | 6°C | 10°C | 13°C |
| April | 8°C | 13°C | 17°C |
| May | 10°C | 16°C | 22°C |
| June | 12°C | 20°C | 28°C |
| July | 14°C | 22°C | 29°C |
| August | 18°C | 23°C | 28°C |
| September | 16°C | 21°C | 26°C |
| October | 11°C | 15°C | 19°C |
| November | 6°C | 10°C | 13°C |
| December | 4°C | 8°C | 11°C |
Cheddar Reservoir: Water Temperature by Location
Cheddar Reservoir: Weather Forecast
September 3
September 4
September 5
September 6
September 7
Location & Local Information
#Somerset
Cheddar Reservoir, a freshwater supply on the edge of the Mendip Hills in Somerset, tends to be cold for much of the year. Typical surface temperatures range from about 6–12 °C (43–54 °F) in spring, rise to roughly 14–20 °C (57–68 °F) in summer, fall back to 8–14 °C (46–57 °F) in autumn and sit around 3–7 °C (37–45 °F) through winter. These figures fluctuate with weather, depth and wind, and even summer highs can feel chilly compared with coastal waters.
Swimming is generally not permitted at Cheddar Reservoir because it is part of the local water supply and because of safety risks such as cold shock, sudden depth changes and underwater hazards. Some organised, licensed activities like angling or supervised watersports may be allowed at certain times, but informal wild swimming is discouraged or prohibited. Visitors commonly enjoy the surrounding access paths, birdwatching and views, while nearby attractions include the dramatic Cheddar Gorge and caves, the village of Cheddar and wider Mendip Hills for walking and caving.