Alto Cávado Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Alto Cávado Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Alto Cávado Reservoir today is 19.9°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 15 | 17.9°C | 21.0°C | |
| JUL 16 | 17.9°C | 21.0°C | |
| JUL 17 | 17.8°C | 21.0°C | |
| JUL 18 | 18.7°C | 21.0°C | |
| JUL 19 | 18.8°C | 21.0°C | |
| JUL 20 | 18.8°C | 21.0°C | |
| JUL 21 | 18.9°C | 21.0°C | |
| JUL 22 | 19.9°C | 21.0°C | |
| JUL 23 | 21.0°C | 20.0°C | |
| JUL 24 | 21.0°C | 20.0°C | |
| JUL 25 | 21.0°C | 20.1°C | |
| JUL 26 | 21.0°C | 20.1°C | |
| JUL 27 | 21.0°C | 20.2°C | |
| JUL 28 | 21.0°C | 20.2°C | |
| JUL 29 | 21.0°C | 20.3°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 | 2°C | 6°C | 9°C |
| February | 2°C | 6°C | 9°C |
| March | 5°C | 9°C | 12°C |
| April | 8°C | 12°C | 15°C |
| May | 10°C | 16°C | 22°C |
| June | 13°C | 19°C | 24°C |
| July | 16°C | 21°C | 26°C |
| August | 17°C | 22°C | 27°C |
| September | 13°C | 19°C | 24°C |
| October | 10°C | 14°C | 18°C |
| November | 6°C | 10°C | 14°C |
| December | 2°C | 6°C | 9°C |
Alto Cávado Reservoir: Water Temperature by Location
Alto Cávado Reservoir: Weather Forecast
July 23
July 24
July 25
July 26
July 27
Location & Local Information
The Albufeira da Barragem do Alto Cávado (in Portuguese) is a mountain reservoir in the Vila Real District whose water temperatures reflect its altitude and seasonal variability. Typical surface temperatures range from about 4–10 °C (39–50 °F) in winter, 8–15 °C (46–59 °F) in spring, 18–24 °C (64–75 °F) in summer, and 10–16 °C (50–61 °F) in autumn. These figures are approximate and can vary with recent weather, wind, inflow from mountain streams and depth; deeper water remains colder year-round. Even in summer, sudden temperature drops can be felt below the surface or near inflow channels.
Swimming does occur at the reservoir, but there is no extensive official bathing infrastructure or lifeguard service, so it is generally not recommended as a supervised beach. Authorities and water managers may discourage or restrict swimming because the dam serves water supply and hydroelectric purposes, with variable levels, strong currents near outlets, submerged obstacles and occasional concerns about water quality. People who choose to swim do so at their own risk and should heed local signage, municipal rules and safety advice, and be mindful of cold-water shock and changing conditions.