Arnoia River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Arnoia River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Arnoia River today is 18.9°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 | 19.8°C | 17.0°C | |
| SEP 14 | 19.7°C | 17.0°C | |
| SEP 15 | 19.6°C | 17.0°C | |
| SEP 16 | 19.9°C | 17.0°C | |
| SEP 17 | 20.7°C | 17.0°C | |
| SEP 18 | 20.6°C | 17.0°C | |
| SEP 19 | 19.3°C | 17.0°C | |
| SEP 20 | 18.9°C | 17.0°C | |
| SEP 21 | 17.0°C | 18.8°C | |
| SEP 22 | 17.0°C | 18.7°C | |
| SEP 23 | 17.0°C | 18.6°C | |
| SEP 24 | 17.0°C | 18.5°C | |
| SEP 25 | 17.0°C | 18.4°C | |
| SEP 26 | 17.0°C | 18.3°C | |
| SEP 27 | 17.0°C | 18.2°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 | 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 | 18°C |
| June | 12°C | 17°C | 21°C |
| July | 15°C | 19°C | 24°C |
| August | 15°C | 19°C | 24°C |
| September | 12°C | 17°C | 21°C |
| October | 10°C | 14°C | 17°C |
| November | 7°C | 10°C | 13°C |
| December | 4°C | 7°C | 11°C |
Arnoia River: Water Temperature by Location
Arnoia River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source Sierra de San Mamede
• location Vilar de Barrio, Galicia, Spain
Mouth:
• location Río Miño
• coordinates 42°15′15.8″N 8°09′8.7″W
Length 84.5 km (52.5 mi)
The Río Arnoya in Galicia, Spain, typically shows cool to mild temperatures that vary with the season and local conditions. In winter the water commonly sits around 4–9 °C (39–48 °F), spring and autumn temperatures often range from about 10–16 °C (50–61 °F), and in the warmest weeks of summer shallow, sun-exposed pools can warm to roughly 16–22 °C (61–72 °F). These figures are general: actual readings depend on depth, shading, recent rainfall and upstream springs, so smaller pools heat more in summer while deeper or shaded stretches remain noticeably colder.
Swimming in the Río Arnoya is generally possible in calm stretches and at officially recognized bathing spots, where local authorities monitor water quality and access. Many people also swim in informal natural pools, but safety and legality vary: strong currents after heavy rain, hidden underwater obstacles, private property and occasional contamination can make some reaches unsafe or restricted. There are not usually lifeguards, so checking local signage, recent water-quality reports and avoiding risky areas (near dams, weirs or fast-flowing sections) is important before entering the water.