Nervión River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Nervión River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Nervión River today is 19.9°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 | 20.5°C | 17.9°C | |
| SEP 14 | 20.1°C | 17.9°C | |
| SEP 15 | 20.0°C | 17.9°C | |
| SEP 16 | 20.3°C | 17.9°C | |
| SEP 17 | 20.2°C | 17.9°C | |
| SEP 18 | 20.3°C | 17.9°C | |
| SEP 19 | 19.9°C | 17.9°C | |
| SEP 20 | 19.9°C | 17.9°C | |
| SEP 21 | 17.9°C | 19.8°C | |
| SEP 22 | 17.9°C | 19.7°C | |
| SEP 23 | 17.9°C | 19.6°C | |
| SEP 24 | 17.9°C | 19.5°C | |
| SEP 25 | 17.9°C | 19.4°C | |
| SEP 26 | 17.9°C | 19.3°C | |
| SEP 27 | 17.9°C | 19.2°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 | 7°C | 11°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 | 18°C | 24°C |
| July | 14°C | 20°C | 26°C |
| August | 15°C | 20°C | 26°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 |
Nervión River: Water Temperature by Location
Nervión River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source Delika Canyon
• location Sierra Salbada, Álava, Spain
• elevation 1,000 m (3,300 ft)
Mouth Estuary of Bilbao
• location Bay of Biscay between Portugalete and Getxo, Spain
• elevation 0 m (0 ft)
Length 72 km (45 mi)
The river of Nervión (Río Nervión) flows from the Castilian plateau into the Cantabrian Sea at the Bay of Biscay, and water temperatures vary with season, location and river flow. In winter the river commonly measures around 6–10 °C (43–50 °F), spring sees gradual warming to roughly 8–14 °C (46–57 °F), summer surface temperatures in calmer, lower stretches can reach about 16–22 °C (61–72 °F), and autumn typically brings a cooling range near 10–16 °C (50–61 °F). Upper mountain-fed reaches are usually colder year-round, while the lower estuarine zone around Bilbao is somewhat milder but subject to strong currents, tidal influence and variations after rain that lower temperatures and increase turbidity.
Swimming opportunities are mixed and depend on place and season. Many urban sections through Bilbao and industrial areas are not designated for bathing and local rules, water quality concerns and safety hazards such as currents, submerged structures and steep banks make swimming discouraged or prohibited in parts. In more rural or upstream stretches people sometimes practice wild swimming where access and conditions are safe, and nearby coastal beaches at the estuary mouth provide regulated bathing areas. It is advisable to consult local signage, water quality reports and authorities before entering the river.