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 23.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 |
|---|---|---|---|
| AUG 4 | 22.5°C | 27.0°C | |
| AUG 5 | 22.5°C | 27.0°C | |
| AUG 6 | 22.5°C | 27.0°C | |
| AUG 7 | 22.9°C | 27.0°C | |
| AUG 8 | 22.9°C | 27.0°C | |
| AUG 9 | 22.9°C | 27.0°C | |
| AUG 10 | 23.5°C | 27.0°C | |
| AUG 11 | 23.5°C | 27.0°C | |
| AUG 12 | 27.0°C | 23.7°C | |
| AUG 13 | 27.0°C | 23.9°C | |
| AUG 14 | 27.0°C | 24.0°C | |
| AUG 15 | 27.0°C | 24.2°C | |
| AUG 16 | 27.0°C | 24.4°C | |
| AUG 17 | 27.0°C | 24.6°C | |
| AUG 18 | 27.0°C | 24.7°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 | 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 | 22°C | 27°C | 33°C |
| September | 20°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
August 12
August 13
August 14
August 15
August 16
August 17
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.