Mira River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Mira River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Mira River today is 21.4°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 | 20.7°C | 23.8°C | |
| JUN 24 | 20.9°C | 23.8°C | |
| JUN 25 | 20.9°C | 23.8°C | |
| JUN 26 | 20.9°C | 23.8°C | |
| JUN 27 | 20.6°C | 23.8°C | |
| JUN 28 | 20.8°C | 23.8°C | |
| JUN 29 | 20.8°C | 23.8°C | |
| JUN 30 | 21.5°C | 23.8°C | |
| JUL 1 | 27.0°C | 21.7°C | |
| JUL 2 | 27.0°C | 22.0°C | |
| JUL 3 | 27.0°C | 22.2°C | |
| JUL 4 | 27.0°C | 22.5°C | |
| JUL 5 | 27.0°C | 22.8°C | |
| JUL 6 | 27.0°C | 23.1°C | |
| JUL 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 | 9°C | 13°C |
| February | 9°C | 12°C | 15°C |
| March | 10°C | 14°C | 17°C |
| April | 12°C | 16°C | 18°C |
| May | 15°C | 19°C | 24°C |
| June | 19°C | 24°C | 28°C |
| July | 22°C | 27°C | 28°C |
| August | 22°C | 27°C | 28°C |
| September | 22°C | 27°C | 28°C |
| October | 14°C | 18°C | 20°C |
| November | 11°C | 15°C | 18°C |
| December | 9°C | 12°C | 15°C |
Mira River: Water Temperature by Location
Mira River: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Source:
• location Serra do Caldeirão, Portugal
• elevation approx. 470 m (1,540 ft)
Mouth:
• location Atlantic Ocean, Vila Nova de Milfontes, Portugal
Length 145 km (90 mi)
The Mira River (Rio Mira), flowing through the Beja District toward the Atlantic at Vila Nova de Milfontes, has water temperatures that reflect its Mediterranean climate and Atlantic influence. In winter months temperatures commonly sit around 12–14 °C (54–57 °F), rising in spring to roughly 14–18 °C (57–64 °F). During summer, surface and shallow pool temperatures often warm to about 18–24 °C (64–75 °F), while autumn typically brings a gradual cooling to approximately 14–20 °C (57–68 °F). Local conditions such as recent rainfall, depth, shade from vegetation and tidal influence near the mouth can shift these values by a few degrees.
Swimming in the Rio Mira is widely practiced and generally allowed in many public river beaches, natural pools and the calmer downstream reaches near the mouth, where accessibility and milder currents make bathing popular. However, permissions and safety depend on location: some stretches cross private land or protected habitats and may be restricted, and high flows after storms, underwater hazards, strong currents in narrow channels and occasional water-quality issues can make swimming unsafe. Visitors are advised to follow local signage, choose recognized bathing spots, and consider seasonal flow and temperature when planning a swim.