Alcobaça — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Alcobaça, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Alcobaça today is 18.3°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 |
|---|---|---|---|
| OCT 4 | 17.7°C | 18.0°C | |
| OCT 5 | 17.7°C | 18.0°C | |
| OCT 6 | 17.4°C | 18.0°C | |
| OCT 7 | 18.4°C | 18.0°C | |
| OCT 8 | 18.3°C | 18.0°C | |
| OCT 9 | 18.2°C | 18.0°C | |
| OCT 10 | 18.4°C | 18.0°C | |
| OCT 11 | 18.3°C | 18.0°C | |
| OCT 12 | 18.0°C | 18.3°C | |
| OCT 13 | 18.0°C | 18.3°C | |
| OCT 14 | 18.0°C | 18.3°C | |
| OCT 15 | 18.0°C | 18.2°C | |
| OCT 16 | 18.0°C | 18.2°C | |
| OCT 17 | 18.0°C | 18.2°C | |
| OCT 18 | 18.0°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 | 6°C | 9°C | 12°C |
| February | 6°C | 9°C | 13°C |
| March | 9°C | 12°C | 15°C |
| April | 9°C | 13°C | 17°C |
| May | 10°C | 15°C | 21°C |
| June | 16°C | 20°C | 25°C |
| July | 18°C | 23°C | 27°C |
| August | 18°C | 23°C | 27°C |
| September | 18°C | 22°C | 27°C |
| October | 14°C | 18°C | 20°C |
| November | 10°C | 15°C | 18°C |
| December | 8°C | 11°C | 15°C |
Alcobaça: Weather Forecast
October 11
October 12
October 13
October 14
October 15
October 16
Location & Local Information
Alcobaça (in Portuguese: Alcobaça), in the Leiria District of Portugal, is surrounded by a mix of small lakes and reservoirs whose surface temperatures vary with season and depth. Typical seasonal ranges for inland freshwater bodies near Alcobaça are roughly 8–12 °C (46–54 °F) in winter, 12–18 °C (54–64 °F) in spring, 20–26 °C (68–79 °F) in summer, and 14–20 °C (57–68 °F) in autumn. Shallower ponds and sheltered coves warm more quickly and can reach the upper end of these ranges in hot summers, while deeper reservoirs and shaded areas remain noticeably cooler year-round. Weather patterns, recent rainfall and local currents also influence day-to-day temperatures.
Swimming is possible in some lakes and reservoir beaches around Alcobaça, particularly in summer when surface temperatures are most comfortable, but whether it is allowed depends on specific site regulations, water quality and safety considerations. Designated bathing areas monitored by local authorities are usually permitted because they meet quality and safety standards; other sites—especially near dam structures, intake zones or protected habitats—may be restricted or discouraged for safety and environmental reasons. Visitors should check local signage and municipal guidance before entering the water and be aware that colder temperatures below about 20 °C (68 °F) can feel brisk and affect endurance.