Pateira de Fermentelos Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Pateira de Fermentelos Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Pateira de Fermentelos Lake 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 |
|---|---|---|---|
| JUN 23 | 20.9°C | 26.5°C | |
| JUN 24 | 21.9°C | 26.5°C | |
| JUN 25 | 21.9°C | 26.5°C | |
| JUN 26 | 21.9°C | 26.5°C | |
| JUN 27 | 21.9°C | 26.5°C | |
| JUN 28 | 21.4°C | 26.5°C | |
| JUN 29 | 21.4°C | 26.5°C | |
| JUN 30 | 21.5°C | 26.5°C | |
| JUL 1 | 28.0°C | 22.1°C | |
| JUL 2 | 28.0°C | 22.4°C | |
| JUL 3 | 28.0°C | 22.7°C | |
| JUL 4 | 28.0°C | 23.0°C | |
| JUL 5 | 28.0°C | 23.4°C | |
| JUL 6 | 28.0°C | 23.7°C | |
| JUL 7 | 28.0°C | 24.0°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 | 6°C | 10°C | 13°C |
| February | 8°C | 12°C | 15°C |
| March | 9°C | 13°C | 17°C |
| April | 11°C | 15°C | 20°C |
| May | 15°C | 21°C | 26°C |
| June | 18°C | 27°C | 34°C |
| July | 23°C | 28°C | 34°C |
| August | 24°C | 29°C | 34°C |
| September | 22°C | 27°C | 33°C |
| October | 16°C | 20°C | 23°C |
| November | 11°C | 15°C | 19°C |
| December | 9°C | 12°C | 15°C |
Pateira de Fermentelos Lake: Water Temperature by Location
Pateira de Fermentelos Lake: Weather Forecast
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Location & Local Information
Pateira de Fermentelos (Portuguese: Pateira de Fermentelos) is a large shallow freshwater lake in the Aveiro District whose water temperature varies noticeably through the year. Typical seasonal ranges are roughly 8–13 °C (46–55 °F) in winter, 12–18 °C (54–64 °F) in spring, 20–25 °C (68–77 °F) in summer, and 14–20 °C (57–68 °F) in autumn. Because the lake is relatively shallow and sheltered, it tends to warm more in summer and cool quickly in winter; localized conditions such as water depth, inflows, and weather can produce variations from these averages.
Swimming at Pateira de Fermentelos is generally possible and the lake is used recreationally for bathing, boating and fishing, but it is not always managed as a formal supervised public beach. Local authorities may advise against swimming at times due to water quality issues (algal growth, nutrient runoff from surrounding agriculture) or to ensure safety around boats and dense aquatic vegetation. There are also stretches that are safer for bathing than the reed-fringed shallows. Visitors should check current signage and water-quality advisories, choose areas with clearer water and easier access, and be prepared for the absence of lifeguards.