Derwent Reservoir, Derbyshire — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Derwent Reservoir, Derbyshire, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Derwent Reservoir, Derbyshire 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 |
|---|---|---|---|
| JUN 25 | 16.5°C | 19.7°C | |
| JUN 26 | 16.5°C | 19.7°C | |
| JUN 27 | 18.2°C | 19.7°C | |
| JUN 28 | 18.2°C | 19.7°C | |
| JUN 29 | 18.2°C | 19.7°C | |
| JUN 30 | 18.3°C | 19.7°C | |
| JUL 1 | 18.3°C | 22.0°C | |
| JUL 2 | 18.3°C | 22.0°C | |
| JUL 3 | 22.0°C | 18.5°C | |
| JUL 4 | 22.0°C | 18.7°C | |
| JUL 5 | 22.0°C | 18.9°C | |
| JUL 6 | 22.0°C | 19.0°C | |
| JUL 7 | 22.0°C | 19.2°C | |
| JUL 8 | 22.0°C | 19.4°C | |
| JUL 9 | 22.0°C | 19.6°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 | 1°C | 5°C | 8°C |
| February | 1°C | 5°C | 8°C |
| March | 2°C | 6°C | 9°C |
| April | 6°C | 10°C | 13°C |
| May | 10°C | 15°C | 21°C |
| June | 13°C | 20°C | 26°C |
| July | 17°C | 22°C | 27°C |
| August | 16°C | 21°C | 26°C |
| September | 12°C | 18°C | 23°C |
| October | 9°C | 13°C | 17°C |
| November | 3°C | 7°C | 11°C |
| December | 1°C | 5°C | 8°C |
Derwent Reservoir, Derbyshire: Water Temperature by Location
Derwent Reservoir, Derbyshire: Weather Forecast
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Location & Local Information
#Derbyshire
Derwent Reservoir in the Upper Derwent Valley is a deep, upland reservoir so water temperatures stay cool year-round. Seasonal surface temperatures typically range from around 4–6 °C (39–43 °F) in mid-winter to roughly 10–16 °C (50–61 °F) through the summer, with spring and autumn sitting between about 6–10 °C (43–50 °F). Because of its depth and exposure, even summer water can feel brisk and thermally variable between surface and deeper layers, so hypothermia is a real risk for unprepared swimmers.
Swimming at Derwent Reservoir is generally not permitted or actively discouraged. The reservoir forms part of a managed water supply and there are safety and environmental reasons for restricting access; there are no designated supervised bathing areas and strong, cold currents can be hazardous. Occasional organised events may take place with permission, but casual wild swimming is both unsafe and frowned upon. Visitors commonly enjoy nearby attractions instead: scenic walks around Ladybower and Howden reservoirs, moorland hiking, birdwatching, and visiting local villages such as Bamford or Hathersage for cafes and climbing access.