Zadorra River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Zadorra River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Zadorra River today is 19.6°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 |
|---|---|---|---|
| SEP 13 | 20.7°C | 16.7°C | |
| SEP 14 | 20.7°C | 16.7°C | |
| SEP 15 | 19.6°C | 16.7°C | |
| SEP 16 | 20.1°C | 16.7°C | |
| SEP 17 | 21.5°C | 16.7°C | |
| SEP 18 | 20.8°C | 16.7°C | |
| SEP 19 | 20.2°C | 16.7°C | |
| SEP 20 | 19.6°C | 16.7°C | |
| SEP 21 | 16.7°C | 19.5°C | |
| SEP 22 | 16.7°C | 19.3°C | |
| SEP 23 | 16.7°C | 19.2°C | |
| SEP 24 | 16.7°C | 19.0°C | |
| SEP 25 | 16.7°C | 18.9°C | |
| SEP 26 | 16.7°C | 18.7°C | |
| SEP 27 | 16.7°C | 18.6°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 | 4°C | 8°C | 10°C |
| February | 4°C | 8°C | 10°C |
| March | 6°C | 9°C | 12°C |
| April | 8°C | 11°C | 15°C |
| May | 9°C | 14°C | 20°C |
| June | 12°C | 17°C | 23°C |
| July | 15°C | 20°C | 25°C |
| August | 15°C | 20°C | 25°C |
| September | 12°C | 17°C | 22°C |
| October | 10°C | 14°C | 17°C |
| November | 7°C | 10°C | 13°C |
| December | 4°C | 8°C | 10°C |
Zadorra River: Water Temperature by Location
Zadorra River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source:
• location Basque Mountains
• elevation 1,045 m (3,428 ft)
Mouth:
• location Ebro River
Length 78.1 km (48.5 mi)
The Zadorra (Spanish: Río Zadorra) flows through Álava in the Basque Country and shows marked seasonal variation in water temperature depending on flow, depth and the presence of reservoirs. In winter the river commonly cools to roughly 4–8 °C (39–46 °F), while spring brings a gradual rise to around 8–15 °C (46–59 °F). Peak summer temperatures in slow-moving stretches and reservoirs can reach about 16–24 °C (61–75 °F), and autumn typically sees a decline to roughly 10–16 °C (50–61 °F). Local factors such as shading, recent rainfall, and releases from upstream reservoirs can cause significant short-term fluctuations from these averages.
Swimming in the Zadorra is permitted in some designated recreational areas but is restricted or discouraged in others. Sections that serve as drinking-water reservoirs, areas near dam infrastructure, or narrow fast-flowing channels are often closed to bathing for reasons of public safety and to protect water quality. Where local municipalities or park authorities authorize access, supervised or marked spots may be used for swimming and other water sports; elsewhere signage and regulations should be checked because currents, submerged obstacles and variable water quality can make unsanctioned swimming unsafe.