Vilar Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Vilar Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Vilar Reservoir today is 21.8°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 19 | 22.4°C | 24.5°C | |
| SEP 20 | 22.1°C | 24.5°C | |
| SEP 21 | 21.5°C | 24.5°C | |
| SEP 22 | 21.4°C | 24.5°C | |
| SEP 23 | 21.5°C | 24.5°C | |
| SEP 24 | 21.2°C | 24.5°C | |
| SEP 25 | 21.7°C | 24.5°C | |
| SEP 26 | 21.8°C | 24.5°C | |
| SEP 27 | 24.5°C | 21.6°C | |
| SEP 28 | 24.5°C | 21.4°C | |
| SEP 29 | 24.5°C | 21.2°C | |
| SEP 30 | 24.5°C | 21.0°C | |
| OCT 1 | 18.0°C | 20.9°C | |
| OCT 2 | 18.0°C | 20.7°C | |
| OCT 3 | 18.0°C | 20.5°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 | 6°C | 10°C | 13°C |
| March | 7°C | 11°C | 14°C |
| April | 9°C | 13°C | 18°C |
| May | 13°C | 19°C | 24°C |
| June | 16°C | 26°C | 34°C |
| July | 19°C | 26°C | 32°C |
| August | 19°C | 26°C | 33°C |
| September | 18°C | 25°C | 30°C |
| October | 13°C | 18°C | 21°C |
| November | 8°C | 13°C | 17°C |
| December | 5°C | 10°C | 14°C |
Vilar Reservoir: Water Temperature by Location
Vilar Reservoir: Weather Forecast
September 27
September 28
September 29
September 30
October 1
Location & Local Information
The Albufeira da Barragem do Vilar, in Viseu District, typically shows seasonal surface temperature patterns driven by regional climate and reservoir depth. In winter the surface water commonly ranges from about 6–12 °C (43–54 °F), spring and autumn see moderate warming to roughly 12–18 °C (54–64 °F), and in the warmest months surface temperatures often reach about 20–25 °C (68–77 °F). These are approximate values: actual temperatures vary with recent weather, water level, inflows and local stratification, so cooler conditions can be found below the surface even in summer and rapid cooling can occur after cloudy or windy periods.
Swimming is possible at the albufeira and is frequently undertaken during the summer when surface temperatures are most comfortable, but whether it is officially allowed depends on local management and posted regulations. Restrictions can be imposed for safety reasons (no lifeguards, steep drop-offs, submerged hazards, boat traffic) or to protect water quality when the reservoir supplies irrigation or drinking water. Visitors should follow municipal signage and guidance; when swimming is permitted, choose shallow, sheltered areas, be aware of cold subsurface water, and take usual precautions because facilities and monitoring are often limited.