Lake Arreo — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Arreo, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Arreo today is 20.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 | 20.9°C | 19.0°C | |
| SEP 14 | 20.8°C | 19.0°C | |
| SEP 15 | 20.2°C | 19.0°C | |
| SEP 16 | 20.5°C | 19.0°C | |
| SEP 17 | 21.9°C | 19.0°C | |
| SEP 18 | 20.9°C | 19.0°C | |
| SEP 19 | 20.9°C | 19.0°C | |
| SEP 20 | 20.6°C | 19.0°C | |
| SEP 21 | 19.0°C | 20.0°C | |
| SEP 22 | 19.0°C | 20.0°C | |
| SEP 23 | 19.0°C | 19.9°C | |
| SEP 24 | 19.0°C | 19.9°C | |
| SEP 25 | 19.0°C | 19.8°C | |
| SEP 26 | 19.0°C | 19.8°C | |
| SEP 27 | 19.0°C | 19.7°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 | 11°C |
| February | 4°C | 8°C | 11°C |
| March | 6°C | 10°C | 13°C |
| April | 8°C | 12°C | 16°C |
| May | 10°C | 15°C | 21°C |
| June | 13°C | 19°C | 24°C |
| July | 17°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 13°C | 19°C | 24°C |
| October | 11°C | 15°C | 19°C |
| November | 7°C | 11°C | 14°C |
| December | 4°C | 8°C | 11°C |
Lake Arreo: Water Temperature by Location
Lake Arreo: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Lake Arreo, also known locally as Lago de Caicedo-Yuso, is a small, clear lake in the Basque Country whose water remains relatively cool year-round because of its modest depth and northern location. Typical seasonal surface temperatures range from roughly 4–8 °C (39–46 °F) in winter, 8–14 °C (46–57 °F) in spring, 18–24 °C (64–75 °F) at the warmest points of summer, and 10–16 °C (50–61 °F) during autumn. Even in mid-summer the lake often feels brisk compared with lowland beaches, although on warm sunny days the surface can be pleasant enough for short swims.
Recreational bathing is commonly practiced in the warmer months, so swimming is possible, but it is subject to local rules and seasonal recommendations. Because the lake lies within a protected natural area and has ecological and water-quality sensitivities, authorities may regulate access or discourage prolonged swimming to protect habitat and maintain water quality; weather and safety considerations (cold shock, underwater hazards) also make caution advisable. Visitors should follow on-site signage and local guidance; when conditions and rules permit, brief swims in summer are the usual way people enjoy the lake.