Oria River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Oria River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Oria River today is 19.5°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 | 19.9°C | 18.0°C | |
| SEP 14 | 20.0°C | 18.0°C | |
| SEP 15 | 19.6°C | 18.0°C | |
| SEP 16 | 19.5°C | 18.0°C | |
| SEP 17 | 20.2°C | 18.0°C | |
| SEP 18 | 20.4°C | 18.0°C | |
| SEP 19 | 19.3°C | 18.0°C | |
| SEP 20 | 19.3°C | 18.0°C | |
| SEP 21 | 18.0°C | 19.4°C | |
| SEP 22 | 18.0°C | 19.4°C | |
| SEP 23 | 18.0°C | 19.3°C | |
| SEP 24 | 18.0°C | 19.2°C | |
| SEP 25 | 18.0°C | 19.1°C | |
| SEP 26 | 18.0°C | 19.1°C | |
| SEP 27 | 18.0°C | 19.0°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 | 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 |
Oria River: Water Temperature by Location
Oria River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source:
• location Basque Mountains
Mouth:
• location Cantabrian Sea (Bay of Biscay)
Length 75 km (47 mi)
The Oria (Río Oria) runs through Gipuzkoa in the Basque Country and reflects the Atlantic-influenced climate of the region, which keeps its waters relatively cool year-round. Seasonal surface temperatures typically range from about 6–10 °C (43–50 °F) in winter, rise to roughly 10–15 °C (50–59 °F) in spring, reach their warmest in summer around 18–22 °C (64–72 °F), and fall again to approximately 12–18 °C (54–64 °F) in autumn. Local conditions vary: upstream reaches and shaded, faster-flowing sections are noticeably colder than wider, slower stretches downstream, and rainfall or reservoir releases can cause sudden temperature drops.
Swimming is permitted in many stretches of the Oria but not uniformly across the whole river; there are no continuous official bathing beaches, so access depends on local municipal rules, designated swimming spots, and water-quality status. Improved wastewater treatment has made some sections safer than in past decades, yet swimmers should account for hazards such as currents, submerged rocks, variable depths and cold-water shock, especially outside high summer. Because regulations and water quality can change, authorities typically recommend using marked or commonly used bathing areas and observing local signage before entering the river.