Trenchford Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Trenchford Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Trenchford Reservoir today is 18.3°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 |
|---|---|---|---|
| AUG 6 | 18.0°C | 21.0°C | |
| AUG 7 | 18.0°C | 21.0°C | |
| AUG 8 | 18.0°C | 21.0°C | |
| AUG 9 | 18.0°C | 21.0°C | |
| AUG 10 | 18.3°C | 21.0°C | |
| AUG 11 | 18.3°C | 21.0°C | |
| AUG 12 | 18.3°C | 21.0°C | |
| AUG 13 | 18.3°C | 21.0°C | |
| AUG 14 | 21.0°C | 18.4°C | |
| AUG 15 | 21.0°C | 18.6°C | |
| AUG 16 | 21.0°C | 18.7°C | |
| AUG 17 | 21.0°C | 18.8°C | |
| AUG 18 | 21.0°C | 19.0°C | |
| AUG 19 | 21.0°C | 19.1°C | |
| AUG 20 | 21.0°C | 19.2°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 | 3°C | 7°C | 10°C |
| March | 4°C | 8°C | 11°C |
| April | 6°C | 10°C | 13°C |
| May | 6°C | 11°C | 17°C |
| June | 13°C | 19°C | 24°C |
| July | 14°C | 20°C | 25°C |
| August | 16°C | 21°C | 26°C |
| September | 11°C | 17°C | 22°C |
| October | 6°C | 10°C | 13°C |
| November | 4°C | 8°C | 11°C |
| December | 3°C | 7°C | 10°C |
Trenchford Reservoir: Water Temperature by Location
Trenchford Reservoir: Weather Forecast
August 14
August 15
August 16
Location & Local Information
#Devon
Trenchford Reservoir is situated in the beautiful and often remote area of the Dartmoor National Park in Devon, England. Like many reservoirs in the UK, its primary purpose is the storage and supply of drinking water. Consequently, swimming is strictly prohibited in Trenchford Reservoir. This rule is in place for several critical reasons: firstly, to maintain the purity of the public water supply, preventing contamination from human contact or equipment; and secondly, for public safety, as reservoirs can hide unseen hazards like strong undertows, sudden deep drops, and extremely cold water pockets, particularly near the dam infrastructure.
The water temperature in Trenchford experiences the full range of English seasonal changes. During the winter months (December through February), temperatures are consistently cold, typically hovering between 38°F and 45°F (3°C and 7°C). The risk of cold water shock is extremely high during this period. In summer (June through August), the surface water warms up noticeably, generally ranging from 60°F to 68°F (16°C to 20°C). However, even these warm surface readings can conceal significantly colder layers just beneath, posing a danger even to experienced swimmers, reinforcing the no-swimming policy.