Asón River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Asón River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Asón River today is 20.1°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 |
|---|---|---|---|
| SEP 13 | 20.5°C | 18.0°C | |
| SEP 14 | 20.3°C | 18.0°C | |
| SEP 15 | 20.0°C | 18.0°C | |
| SEP 16 | 20.4°C | 18.0°C | |
| SEP 17 | 20.3°C | 18.0°C | |
| SEP 18 | 20.5°C | 18.0°C | |
| SEP 19 | 20.2°C | 18.0°C | |
| SEP 20 | 20.0°C | 18.0°C | |
| SEP 21 | 18.0°C | 20.0°C | |
| SEP 22 | 18.0°C | 19.9°C | |
| SEP 23 | 18.0°C | 19.8°C | |
| SEP 24 | 18.0°C | 19.7°C | |
| SEP 25 | 18.0°C | 19.6°C | |
| SEP 26 | 18.0°C | 19.5°C | |
| SEP 27 | 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 | 4°C | 8°C | 10°C |
| February | 4°C | 8°C | 12°C |
| March | 7°C | 10°C | 13°C |
| April | 9°C | 13°C | 16°C |
| May | 9°C | 15°C | 21°C |
| June | 13°C | 19°C | 25°C |
| July | 14°C | 20°C | 27°C |
| August | 15°C | 21°C | 27°C |
| September | 13°C | 18°C | 23°C |
| October | 10°C | 14°C | 17°C |
| November | 6°C | 11°C | 17°C |
| December | 4°C | 8°C | 12°C |
Asón River: Water Temperature by Location
Asón River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
The Río Asón, in Cantabria, is a mountain-fed river whose water remains relatively cool year-round because of shaded valleys, springs and frequent rainfall. Typical seasonal surface temperatures are roughly 6–10 °C (43–50 °F) in winter, 8–15 °C (46–59 °F) in spring, 14–22 °C (57–72 °F) in summer and 10–16 °C (50–61 °F) in autumn. Local microclimates and flows change these values: shallow, sun-exposed pools warm more in summer while deeper or fast-flowing sections stay colder. After heavy rain or snowmelt temperatures can drop and currents strengthen, reducing thermal comfort and increasing risk.
Swimming in the Río Asón is possible in many calm pools and near some small waterfalls, but it is not universally recommended without care. There are no blanket bans across the whole river, yet certain stretches lie within protected areas, private land or have signage prohibiting bathing for safety or conservation reasons; water quality can also vary seasonally. Cold temperatures, strong currents, slippery rocks and sudden level changes are the main reasons to avoid casual swimming; visitors should follow local warnings, choose sheltered spots, and be prepared for chilly water even in summer.