Bidasoa River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Bidasoa River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Bidasoa River today is 17.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| JUN 3 | 18.6°C | 19.1°C | |
| JUN 4 | 18.6°C | 19.1°C | |
| JUN 5 | 17.8°C | 19.1°C | |
| JUN 6 | 17.8°C | 19.1°C | |
| JUN 7 | 17.3°C | 19.1°C | |
| JUN 8 | 17.3°C | 19.1°C | |
| JUN 10 | 17.1°C | 19.1°C | |
| JUN 11 | 19.1°C | 17.2°C | |
| JUN 12 | 19.1°C | 17.3°C | |
| JUN 13 | 19.1°C | 17.4°C | |
| JUN 14 | 19.1°C | 17.5°C | |
| JUN 15 | 19.1°C | 17.6°C | |
| JUN 16 | 19.1°C | 17.7°C | |
| JUN 17 | 19.1°C | 17.8°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 | 5°C | 8°C | 11°C |
| February | 7°C | 10°C | 13°C |
| March | 8°C | 11°C | 14°C |
| April | 9°C | 14°C | 17°C |
| May | 13°C | 17°C | 21°C |
| June | 16°C | 19°C | 23°C |
| July | 19°C | 22°C | 27°C |
| August | 19°C | 22°C | 27°C |
| September | 16°C | 21°C | 25°C |
| October | 11°C | 14°C | 17°C |
| November | 8°C | 12°C | 16°C |
| December | 7°C | 9°C | 11°C |
Bidasoa River: Water Temperature by Location
Bidasoa River: Weather Forecast
June 9
June 10
June 11
June 12
June 13
June 14
Location & Local Information
Source:
• location Western Pyrenees
Mouth:
• location Bay of Biscay
• coordinates 43°22′22″N 1°47′31″W
Length 66 km (41 mi)[1]
Basin size 705 km2 (272 sq mi)
The Río Bidasoa, which forms part of the border between Spain and France and drains into the Bay of Biscay near Hondarribia and Hendaye, shows clear seasonal variation in water temperature. In winter the river typically cools to about 5–10 °C (41–50 °F), spring values rise to roughly 8–15 °C (46–59 °F), summer temperatures commonly reach 18–24 °C (64–75 °F) in calmer stretches, and autumn usually brings a decline to 12–18 °C (54–64 °F). These ranges depend on local factors such as altitude, shading, recent rainfall and tidal influence near the estuary; the lower, tidal parts are often a little warmer in summer and subject to more rapid change with weather.
Swimming in the Río Bidasoa is allowed in many places but is conditional on location, season and safety considerations. Inland and sheltered stretches can be suitable for bathing in summer when temperatures are comfortable, whereas in spring and autumn the cooler water limits time in the water and increases hypothermia risk. The estuarine zone and river mouth demand caution because of tides, currents, boat traffic and variable depths; some areas are also protected for ecological reasons or fall under local regulations, so swimmers should follow signage and local advice. Water quality is monitored in many popular spots, and checking current conditions before entering is recommended.