Alfilorios Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Alfilorios Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Alfilorios 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 |
|---|---|---|---|
| JUN 2 | 19.5°C | 19.0°C | |
| JUN 3 | 18.9°C | 19.0°C | |
| JUN 4 | 18.9°C | 19.0°C | |
| JUN 5 | 18.9°C | 19.0°C | |
| JUN 6 | 18.8°C | 19.0°C | |
| JUN 7 | 18.8°C | 19.0°C | |
| JUN 8 | 18.6°C | 19.0°C | |
| JUN 10 | 19.0°C | 18.6°C | |
| JUN 11 | 19.0°C | 18.6°C | |
| JUN 12 | 19.0°C | 18.7°C | |
| JUN 13 | 19.0°C | 18.7°C | |
| JUN 14 | 19.0°C | 18.7°C | |
| JUN 15 | 19.0°C | 18.7°C | |
| JUN 16 | 19.0°C | 18.7°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 | 11°C |
| March | 6°C | 10°C | 13°C |
| April | 9°C | 13°C | 18°C |
| May | 9°C | 15°C | 22°C |
| June | 13°C | 19°C | 24°C |
| July | 14°C | 20°C | 25°C |
| August | 16°C | 21°C | 26°C |
| September | 13°C | 19°C | 24°C |
| October | 10°C | 14°C | 18°C |
| November | 5°C | 9°C | 14°C |
| December | 3°C | 7°C | 12°C |
Alfilorios Reservoir: Water Temperature by Location
Alfilorios Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
June 13
June 14
Location & Local Information
The Embalse de Alfilorios, near Oviedo in Asturias, typically has cool freshwater temperatures that vary with season, weather and depth. In winter surface temperatures often fall into the range of about 6–9 °C (43–48 °F). In spring they commonly rise to roughly 8–15 °C (46–59 °F) as days lengthen and runoff decreases. Summer surface temperatures can reach approximately 18–24 °C (64–75 °F) on warm spells, though deeper water remains noticeably colder. During autumn the lake usually cools back to around 10–16 °C (50–61 °F). These are general seasonal bands: local conditions, recent rain, and reservoir release regimes can shift values by several degrees, and temperature stratification means deeper layers stay colder than the surface.
Swimming at Embalse de Alfilorios is subject to restrictions and local regulations because many reservoirs in Asturias serve as part of drinking-water systems and have safety considerations. Official bathing may be prohibited or discouraged to protect water quality, prevent contamination, and reduce risks related to sudden depth changes, submerged structures and boat traffic. Informal recreational use has been reported in warmer months, but visitors should check posted rules and municipal guidance before entering the water; complying with signage helps protect both public health and the resource.