Avon Dam Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Avon Dam Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Avon Dam Reservoir today is 18.6°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 | 18.7°C | 20.0°C | |
| JUL 17 | 18.5°C | 20.0°C | |
| JUL 18 | 18.5°C | 20.0°C | |
| JUL 19 | 18.5°C | 20.0°C | |
| JUL 20 | 18.5°C | 20.0°C | |
| JUL 21 | 18.6°C | 20.0°C | |
| JUL 22 | 18.6°C | 20.0°C | |
| JUL 23 | 18.6°C | 20.0°C | |
| JUL 24 | 20.0°C | 18.7°C | |
| JUL 25 | 20.0°C | 18.7°C | |
| JUL 26 | 20.0°C | 18.8°C | |
| JUL 27 | 20.0°C | 18.9°C | |
| JUL 28 | 20.0°C | 19.0°C | |
| JUL 29 | 20.0°C | 19.0°C | |
| JUL 30 | 20.0°C | 19.1°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 | 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 | 12°C | 18°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 |
Avon Dam Reservoir: Water Temperature by Location
Avon Dam Reservoir: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
#Devon
Avon Dam Reservoir in Devon tends to be cool year-round. Surface temperatures typically sit around 15–20 °C (59–68 °F) in the warmest months of July and August, dropping to roughly 4–8 °C (39–46 °F) in midwinter. Spring and autumn commonly see temperatures in the 8–14 °C range (46–57 °F), although heatwaves can push surface readings higher briefly while deeper water remains much colder. These figures are approximate and vary with weather, depth and water flows.
Swimming at Avon Dam is generally not promoted; there is no formal bathing area and some reservoirs are managed as drinking-water sites, so access and bathing can be restricted for safety and water-quality reasons. Cold water, hidden underwater hazards and lack of lifeguards mean any unsupervised swimming carries risk. Many visitors instead enjoy nearby pursuits: walking and cycling on the fringes of Dartmoor National Park, riverside trails, wildlife watching and visiting local villages and pubs. If you plan to swim, check local signage and guidance and take appropriate safety precautions.