Pas River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Pas River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Pas River today is 18.1°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 | 18.9°C | 16.7°C | |
| SEP 14 | 18.7°C | 16.7°C | |
| SEP 15 | 18.6°C | 16.7°C | |
| SEP 16 | 19.0°C | 16.7°C | |
| SEP 17 | 18.9°C | 16.7°C | |
| SEP 18 | 19.2°C | 16.7°C | |
| SEP 19 | 19.0°C | 16.7°C | |
| SEP 20 | 18.7°C | 16.7°C | |
| SEP 21 | 16.7°C | 18.0°C | |
| SEP 22 | 16.7°C | 18.0°C | |
| SEP 23 | 16.7°C | 17.9°C | |
| SEP 24 | 16.7°C | 17.8°C | |
| SEP 25 | 16.7°C | 17.8°C | |
| SEP 26 | 16.7°C | 17.7°C | |
| SEP 27 | 16.7°C | 17.6°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 | 9°C |
| February | 3°C | 7°C | 9°C |
| March | 6°C | 9°C | 12°C |
| April | 8°C | 12°C | 15°C |
| May | 9°C | 13°C | 18°C |
| June | 12°C | 17°C | 23°C |
| July | 13°C | 19°C | 25°C |
| August | 14°C | 20°C | 26°C |
| September | 12°C | 17°C | 22°C |
| October | 9°C | 13°C | 16°C |
| November | 5°C | 9°C | 13°C |
| December | 3°C | 6°C | 10°C |
Pas River: Water Temperature by Location
Pas River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source:
• location Castro Valnera
• elevation 1,200 m (3,900 ft)
Mouth Ría de Mogro
• location Santander bay, Bay of Biscay
• elevation 0 m (0 ft)
Length 57 km (35 mi)
The Río Pas, a river in Cantabria, Spain, has water temperatures that vary notably with the seasons and with location along its course. In winter the river is cold, commonly around 5–9 °C (41–48 °F), while spring temperatures typically rise to about 8–14 °C (46–57 °F) as snowmelt and rainfall moderate flows. In summer the shallow, slower stretches can warm to roughly 16–22 °C (61–72 °F), making them the most comfortable for bathing, and autumn usually brings temperatures in the 12–16 °C range (54–61 °F) as air and water cool. These figures are approximate: actual temperatures depend on depth, flow rate, shading, recent rain, and altitude, so conditions can change quickly after storms or during heat spells.
Swimming in the Río Pas is possible in many accessible sections, and there are local “river beach” spots where people commonly bathe in summer, but the entire river is not uniformly designated as a supervised bathing area. Safety and water quality are the main considerations: strong currents, hidden underwater hazards, variable depth, and occasional agricultural or urban runoff can make some stretches inadvisable. Local signage and municipal water-quality reports should be consulted, and swimming is safest where access points, clear water, and lifeguard presence are provided during the warmer months.