Alcácer do Sal — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Alcácer do Sal, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Alcácer do Sal today is 20.5°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 |
|---|---|---|---|
| JUN 23 | 20.2°C | 21.0°C | |
| JUN 24 | 20.5°C | 21.0°C | |
| JUN 25 | 19.9°C | 21.0°C | |
| JUN 26 | 20.0°C | 21.0°C | |
| JUN 27 | 19.8°C | 21.0°C | |
| JUN 28 | 20.1°C | 21.0°C | |
| JUN 29 | 20.1°C | 21.0°C | |
| JUN 30 | 20.5°C | 21.0°C | |
| JUL 1 | 23.0°C | 20.6°C | |
| JUL 2 | 23.0°C | 20.8°C | |
| JUL 3 | 23.0°C | 20.9°C | |
| JUL 4 | 23.0°C | 21.0°C | |
| JUL 5 | 23.0°C | 21.1°C | |
| JUL 6 | 23.0°C | 21.3°C | |
| JUL 7 | 23.0°C | 21.4°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 | 9°C | 12°C |
| February | 6°C | 9°C | 13°C |
| March | 6°C | 10°C | 15°C |
| April | 9°C | 13°C | 18°C |
| May | 13°C | 18°C | 22°C |
| June | 17°C | 21°C | 26°C |
| July | 18°C | 23°C | 27°C |
| August | 19°C | 24°C | 28°C |
| September | 18°C | 22°C | 27°C |
| October | 12°C | 16°C | 18°C |
| November | 9°C | 13°C | 16°C |
| December | 8°C | 11°C | 14°C |
Alcácer do Sal: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Alcácer do Sal, in Setúbal District, sits beside the tidal Sado estuary and nearby inland reservoirs and small lakes where locals and visitors swim. Water temperatures vary by season and by location: in winter these waters commonly sit around 12–15 °C (54–59 °F), in spring they warm to roughly 15–20 °C (59–68 °F), summer temperatures typically range from about 20–26 °C (68–79 °F), and autumn sees gradual cooling to approximately 16–22 °C (61–72 °F). Shallow, sheltered areas and freshwater reservoirs can reach the higher end of these ranges on hot summer days, while deeper or tide-influenced channels stay cooler.
Swimming is generally allowed in designated bathing spots around Alcácer do Sal, especially at river beaches and managed recreational areas, but it depends on local rules and water quality checks. Authorities or local signage indicate when bathing is permitted or temporarily closed due to pollution, algal blooms, strong tides, or lack of lifeguard cover. Visitors are advised to use marked areas, observe safety notices, and be mindful of changing currents and seasonal monitoring results before entering the water.