Santa Maria de Aguiar Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Santa Maria de Aguiar Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Santa Maria de Aguiar Reservoir 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 30 | 20.7°C | 24.0°C | |
| OCT 1 | 20.2°C | 17.0°C | |
| OCT 2 | 20.3°C | 17.0°C | |
| OCT 3 | 19.5°C | 17.0°C | |
| OCT 4 | 19.4°C | 17.0°C | |
| OCT 5 | 19.2°C | 17.0°C | |
| OCT 6 | 19.0°C | 17.0°C | |
| OCT 7 | 18.9°C | 17.0°C | |
| OCT 8 | 17.0°C | 18.8°C | |
| OCT 9 | 17.0°C | 18.7°C | |
| OCT 10 | 17.0°C | 18.6°C | |
| OCT 11 | 17.0°C | 18.5°C | |
| OCT 12 | 17.0°C | 18.4°C | |
| OCT 13 | 17.0°C | 18.3°C | |
| OCT 14 | 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 | 3°C | 7°C | 10°C |
| February | 5°C | 9°C | 12°C |
| March | 6°C | 10°C | 13°C |
| April | 8°C | 13°C | 18°C |
| May | 12°C | 18°C | 23°C |
| June | 17°C | 25°C | 33°C |
| July | 20°C | 25°C | 30°C |
| August | 20°C | 26°C | 32°C |
| September | 19°C | 24°C | 29°C |
| October | 12°C | 17°C | 20°C |
| November | 7°C | 11°C | 15°C |
| December | 5°C | 9°C | 13°C |
Santa Maria de Aguiar Reservoir: Water Temperature by Location
Santa Maria de Aguiar Reservoir: Weather Forecast
October 8
October 9
October 10
October 11
October 12
Location & Local Information
The Albufeira da Barragem de Santa Maria de Aguiar, in Guarda District, typically shows marked seasonal variation in surface water temperature owing to its inland location and elevation. In winter months (December–February) temperatures commonly sit around 6–10 °C (43–50 °F), while spring (March–May) warms to roughly 10–16 °C (50–61 °F). Summer (June–August) brings the warmest conditions with surface values often between 18–24 °C (64–75 °F), and autumn (September–November) sees cooling back to about 12–18 °C (54–64 °F). These are approximate ranges for surface layers; deeper water remains cooler year-round and short-term weather can shift temperatures noticeably.
Swimming in the Albufeira da Barragem de Santa Maria de Aguiar is practiced recreationally, but whether it is allowed depends on local rules, water quality monitoring and safety considerations. Some reservoirs permit bathing in designated areas when authorities confirm acceptable microbiological and algal conditions, while others restrict access to protect water supply or for public safety due to currents, submerged structures and lack of lifeguards. Visitors should heed signage and municipal guidance because permitted use is conditioned mainly by water quality assessments and operational needs of the dam rather than purely recreational preference.