Aveiro — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Aveiro, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Aveiro today is 21.5°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 |
|---|---|---|---|
| AUG 24 | 23.7°C | 27.9°C | |
| AUG 25 | 23.7°C | 27.9°C | |
| AUG 26 | 23.6°C | 27.9°C | |
| AUG 27 | 21.7°C | 27.9°C | |
| AUG 28 | 21.5°C | 27.9°C | |
| AUG 29 | 21.5°C | 27.9°C | |
| AUG 30 | 21.5°C | 27.9°C | |
| AUG 31 | 21.5°C | 27.9°C | |
| SEP 1 | 27.0°C | 21.8°C | |
| SEP 2 | 27.0°C | 22.1°C | |
| SEP 3 | 27.0°C | 22.3°C | |
| SEP 4 | 27.0°C | 22.6°C | |
| SEP 5 | 27.0°C | 22.9°C | |
| SEP 6 | 27.0°C | 23.2°C | |
| SEP 7 | 27.0°C | 23.4°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 | 28°C | 34°C |
| August | 21°C | 28°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: Weather Forecast
September 1
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Aveiro (in Portuguese — Aveiro) in Aveiro District sits on a shallow coastal lagoon system, the Ria de Aveiro, where water temperatures vary noticeably with the seasons. In winter (December–February) surface temperatures in the lagoon and adjacent lakes commonly range about 12–15 °C (53.6–59.0 °F). Spring (March–May) sees a gradual rise to roughly 13–17 °C (55.4–62.6 °F). Summer (June–August) is warmest, with typical values of 18–22 °C (64.4–71.6 °F) in sheltered areas and shallow basins, while autumn (September–November) cools back to around 15–19 °C (59.0–66.2 °F). Local microclimates and shallow depths can make lagoon waters a bit warmer than open ocean in summer but also more variable after rain.
Swimming is permitted in designated beaches and calm parts of the ria, and local authorities regularly monitor water quality and post guidance; however, not all channels or lakes are suitable. Boat traffic, tidal currents, limited visibility, and occasional water-quality issues after heavy rainfall or algal events mean swimmers should use marked bathing areas and follow flag warnings. For casual bathing and supervised beach swims, summer temperatures are generally comfortable, while spring and autumn swims may feel cool to most people and winter swimming is brisk and chosen mainly by experienced or acclimatized swimmers.