Nalón River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Nalón River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Nalón River today is 19°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 |
|---|---|---|---|
| SEP 13 | 19.7°C | 18.0°C | |
| SEP 14 | 19.1°C | 18.0°C | |
| SEP 15 | 18.9°C | 18.0°C | |
| SEP 16 | 19.5°C | 18.0°C | |
| SEP 17 | 19.6°C | 18.0°C | |
| SEP 18 | 19.5°C | 18.0°C | |
| SEP 19 | 19.2°C | 18.0°C | |
| SEP 20 | 19.1°C | 18.0°C | |
| SEP 21 | 18.0°C | 19.0°C | |
| SEP 22 | 18.0°C | 18.9°C | |
| SEP 23 | 18.0°C | 18.9°C | |
| SEP 24 | 18.0°C | 18.8°C | |
| SEP 25 | 18.0°C | 18.8°C | |
| SEP 26 | 18.0°C | 18.7°C | |
| SEP 27 | 18.0°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 | 4°C | 8°C | 10°C |
| February | 4°C | 7°C | 11°C |
| March | 7°C | 10°C | 13°C |
| April | 9°C | 13°C | 17°C |
| May | 9°C | 15°C | 21°C |
| June | 13°C | 18°C | 24°C |
| July | 14°C | 20°C | 26°C |
| August | 15°C | 21°C | 27°C |
| September | 13°C | 18°C | 22°C |
| October | 10°C | 14°C | 17°C |
| November | 6°C | 11°C | 16°C |
| December | 4°C | 8°C | 12°C |
Nalón River: Water Temperature by Location
Nalón River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source Fuente la Nalona
Length 140.8 km (87.5 mi)
The Río Nalón, a principal river in Asturias, Spain, varies notably in temperature along its course because it flows from mountainous headwaters to a coastal estuary. Seasonal water temperatures typically range from about 4–10 °C (39–50 °F) in winter, 8–14 °C (46–57 °F) in spring, 14–22 °C (57–72 °F) in summer, and 10–16 °C (50–61 °F) in autumn. Upper, fast-flowing segments and shaded valleys remain colder year-round, while lower stretches and the estuary near the coast warm more in summer and can reach the higher end of those ranges. Local weather, recent rainfall, and depth all influence the exact temperature at any given spot.
Swimming in the Río Nalón is permitted in many accessible sections, especially in calmer lower reaches and some popular local spots, but it is not universally safe or allowed. Restrictions may apply near dams, reservoirs, industrial sites, or strong currents, and there are hazards such as submerged rocks, variable currents and the risk of cold-water shock where temperatures stay low. Visitors should follow local signage and regulations, choose designated or well-known swimming areas, and be mindful of seasonal temperature changes that affect comfort and safety.