Embalse de Alsa — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Embalse de Alsa, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Embalse de Alsa today is 20.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 23 | 20.5°C | 17.0°C | |
| JUN 24 | 20.5°C | 17.0°C | |
| JUN 25 | 20.6°C | 17.0°C | |
| JUN 26 | 20.6°C | 17.0°C | |
| JUN 27 | 20.7°C | 17.0°C | |
| JUN 28 | 20.7°C | 17.0°C | |
| JUN 29 | 20.6°C | 17.0°C | |
| JUN 30 | 20.6°C | 17.0°C | |
| JUL 1 | 18.0°C | 20.1°C | |
| JUL 2 | 18.0°C | 20.0°C | |
| JUL 3 | 18.0°C | 19.9°C | |
| JUL 4 | 18.0°C | 19.8°C | |
| JUL 5 | 18.0°C | 19.7°C | |
| JUL 6 | 18.0°C | 19.5°C | |
| JUL 7 | 18.0°C | 19.4°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 | 4°C | 8°C | 11°C |
| April | 7°C | 11°C | 14°C |
| May | 7°C | 12°C | 18°C |
| June | 11°C | 17°C | 22°C |
| July | 12°C | 18°C | 23°C |
| August | 13°C | 19°C | 24°C |
| September | 11°C | 17°C | 22°C |
| October | 8°C | 12°C | 15°C |
| November | 3°C | 8°C | 13°C |
| December | 1°C | 5°C | 9°C |
Embalse de Alsa: Water Temperature by Location
Embalse de Alsa: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
The Embalse de Alsa in Cantabria typically has cool, seasonally variable water temperatures driven by its northern Atlantic climate, elevation and reservoir depth. In summer the surface water can warm to roughly 18–24 °C (64–75 °F) on warm, calm days, though deeper or more shaded parts remain several degrees cooler. Spring and autumn usually see a wider range, around 8–18 °C (46–64 °F), with rapid swings after cold fronts or heat spells. In winter the reservoir commonly drops to about 4–10 °C (39–50 °F), and may feel especially cold because of wind and the absence of solar warming. Local inflows, recent rainfall, and reservoir management (stratification, releases) all influence these values, so temperatures can vary from year to year.
Swimming at Embalse de Alsa is subject to local regulations and practical restrictions, and in many reservoirs of this type activity is either formally limited or discouraged. Reasons include protection of water quality when a reservoir serves as a water supply, safety concerns such as steep banks, submerged hazards and cold, changeable temperatures, and boat traffic or management operations. Visitors should follow posted signs and check with local authorities before entering the water; where swimming is permitted, the cooler seasonal ranges and variable conditions make caution, a buddy system and appropriate exposure protection advisable.