Crowdy Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Crowdy Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Crowdy Reservoir today is 18.9°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 | 19.0°C | 20.0°C | |
| JUL 17 | 18.8°C | 20.0°C | |
| JUL 18 | 18.8°C | 20.0°C | |
| JUL 19 | 18.8°C | 20.0°C | |
| JUL 20 | 18.8°C | 20.0°C | |
| JUL 21 | 18.9°C | 20.0°C | |
| JUL 22 | 18.9°C | 20.0°C | |
| JUL 23 | 18.9°C | 20.0°C | |
| JUL 24 | 20.0°C | 19.0°C | |
| JUL 25 | 20.0°C | 19.0°C | |
| JUL 26 | 20.0°C | 19.1°C | |
| JUL 27 | 20.0°C | 19.1°C | |
| JUL 28 | 20.0°C | 19.2°C | |
| JUL 29 | 20.0°C | 19.2°C | |
| JUL 30 | 20.0°C | 19.3°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 |
Crowdy Reservoir: Water Temperature by Location
Crowdy Reservoir: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
#Cornwall
Crowdy Reservoir’s water tends to be cool year-round. In winter the surface commonly sits around 4–8 °C (39–46 °F), rising through spring to roughly 6–12 °C (43–54 °F). In most summers the reservoir warms to about 14–18 °C (57–64 °F), with occasional warm spells pushing parts of the surface toward 20 °C (68 °F). These figures are typical for a shallow upland reservoir in north Cornwall and can vary with weather, wind and depth; night-time temperatures and deeper water remain noticeably colder.
Open swimming at Crowdy is generally discouraged and, in practice, often not permitted by the site’s management because of safety risks, variable depths, submerged hazards and water-quality and operational concerns. Watersports such as sailing or canoeing may be allowed under supervision or as organised activities with permission. The area is valued for walking and birdwatching, and nearby attractions include Bodmin Moor’s open landscapes and the north Cornwall coast with its beaches and coastal paths, making the site a useful base for outdoor visits even if casual bathing is restricted.