Xallas River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Xallas River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Xallas River today is 19.3°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 |
|---|---|---|---|
| JUN 23 | 19.3°C | 18.0°C | |
| JUN 24 | 19.7°C | 18.0°C | |
| JUN 25 | 19.7°C | 18.0°C | |
| JUN 26 | 19.7°C | 18.0°C | |
| JUN 27 | 19.2°C | 18.0°C | |
| JUN 28 | 19.2°C | 18.0°C | |
| JUN 29 | 19.2°C | 18.0°C | |
| JUN 30 | 19.2°C | 18.0°C | |
| JUL 1 | 21.0°C | 19.4°C | |
| JUL 2 | 21.0°C | 19.5°C | |
| JUL 3 | 21.0°C | 19.6°C | |
| JUL 4 | 21.0°C | 19.6°C | |
| JUL 5 | 21.0°C | 19.7°C | |
| JUL 6 | 21.0°C | 19.8°C | |
| JUL 7 | 21.0°C | 19.9°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 | 6°C | 9°C | 12°C |
| February | 6°C | 9°C | 12°C |
| March | 8°C | 11°C | 14°C |
| April | 9°C | 13°C | 17°C |
| May | 11°C | 16°C | 20°C |
| June | 14°C | 18°C | 23°C |
| July | 17°C | 21°C | 26°C |
| August | 17°C | 21°C | 26°C |
| September | 14°C | 18°C | 23°C |
| October | 12°C | 16°C | 18°C |
| November | 9°C | 12°C | 15°C |
| December | 6°C | 9°C | 12°C |
Xallas River: Water Temperature by Location
Xallas River: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Source:
• location Monte Castelo, Coristanco
• elevation 380 m (1,250 ft)
Mouth:
• location Atlantic Ocean
• elevation 0 m (0 ft)
Length 57 km (35 mi)
Río Xallas in Galicia typically carries cool, Atlantic‑influenced water year‑round. Seasonal temperatures at accessible stretches and the estuary commonly range from about 8–12 °C (46–54 °F) in winter, 10–16 °C (50–61 °F) in spring, 16–22 °C (61–72 °F) in summer, and back to roughly 10–16 °C (50–61 °F) in autumn. Local variations occur depending on rainfall, tidal influence near the mouth, and releases from upstream reservoirs: after heavy rain or during controlled discharges the river can be colder and faster, while shallow, sheltered pools warm more in summer.
Swimming is allowed in many of the calmer, public sections of the Río Xallas and around the estuary, but it is not uniformly permitted everywhere and carries safety considerations. Areas directly below the Fervenza do Ézaro waterfall, near dam outlets, or on private land are unsafe or restricted because of strong currents, sudden flow changes, and conservation rules. Water quality is generally good but can vary after storms. Cold temperatures outside summer increase the risk of cold shock and hypothermia, so swimmers should choose sheltered spots in warmer months, obey local signage and restrictions, and avoid risky zones near falls or release points.