Aveiro Lagoon — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Aveiro Lagoon, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Aveiro Lagoon today is 25°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 | 24.0°C | 29.0°C | |
| AUG 5 | 24.0°C | 29.0°C | |
| AUG 6 | 24.4°C | 29.0°C | |
| AUG 7 | 24.3°C | 29.0°C | |
| AUG 8 | 24.3°C | 29.0°C | |
| AUG 9 | 24.3°C | 29.0°C | |
| AUG 10 | 24.9°C | 29.0°C | |
| AUG 11 | 25.0°C | 29.0°C | |
| AUG 12 | 29.0°C | 25.2°C | |
| AUG 13 | 29.0°C | 25.4°C | |
| AUG 14 | 29.0°C | 25.6°C | |
| AUG 15 | 29.0°C | 25.8°C | |
| AUG 16 | 29.0°C | 26.0°C | |
| AUG 17 | 29.0°C | 26.2°C | |
| AUG 18 | 29.0°C | 26.4°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 | 26°C | 34°C |
| July | 20°C | 27°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 |
Aveiro Lagoon: Water Temperature by Location
Aveiro Lagoon: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
The Aveiro Lagoon (Ria de Aveiro) is a shallow, coastal lagoon system on Portugal’s west coast whose water temperatures reflect both Atlantic influence and local shallows. Seasonal averages typically range from about 10–14 °C (50–57 °F) in winter to 17–23 °C (63–73 °F) in summer, with spring values near 12–18 °C (54–64 °F) and autumn around 14–19 °C (57–66 °F). Shallower channels and enclosed salt pans warm more quickly in sunny months, so sheltered spots can feel several degrees warmer than the open lagoon arms; conversely, tidal exchange with cooler Atlantic waters can lower temperatures, especially after windy or rainy periods.
Swimming in the Ria de Aveiro is generally permitted in designated bathing areas and on nearby beaches, and many popular spots are monitored for water quality during the bathing season. The lagoon’s calm, shallow water makes it attractive for recreational swimming, but users should respect signage and swim only where indicated because some channels are used for navigation, aquaculture or boating and can have stronger currents, boat traffic, or poorer water quality. Lifeguards may be present at main beaches in summer; outside marked zones, swimmers should exercise caution and check local advice before entering the water.