Mondego River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Mondego River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Mondego River today is 20°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 |
|---|---|---|---|
| AUG 24 | 22.5°C | 24.0°C | |
| AUG 25 | 22.5°C | 24.0°C | |
| AUG 26 | 22.5°C | 24.0°C | |
| AUG 27 | 20.1°C | 24.0°C | |
| AUG 28 | 19.9°C | 24.0°C | |
| AUG 29 | 19.9°C | 24.0°C | |
| AUG 30 | 19.9°C | 24.0°C | |
| AUG 31 | 20.0°C | 24.0°C | |
| SEP 1 | 23.0°C | 20.2°C | |
| SEP 2 | 23.0°C | 20.3°C | |
| SEP 3 | 23.0°C | 20.5°C | |
| SEP 4 | 23.0°C | 20.6°C | |
| SEP 5 | 23.0°C | 20.8°C | |
| SEP 6 | 23.0°C | 20.9°C | |
| SEP 7 | 23.0°C | 21.1°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 | 5°C | 9°C | 11°C |
| February | 7°C | 10°C | 13°C |
| March | 8°C | 11°C | 14°C |
| April | 9°C | 13°C | 18°C |
| May | 13°C | 18°C | 22°C |
| June | 17°C | 23°C | 28°C |
| July | 19°C | 24°C | 28°C |
| August | 19°C | 24°C | 28°C |
| September | 18°C | 23°C | 27°C |
| October | 13°C | 17°C | 19°C |
| November | 9°C | 13°C | 16°C |
| December | 7°C | 11°C | 14°C |
Mondego River: Water Temperature by Location
Mondego River: Weather Forecast
September 1
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Source Serra da Estrela
• location Gouveia
• elevation 1,425 metres (4,675 ft)
Mouth Figueira da Foz
• location Atlantic Ocean, Figueira da Foz, Coimbra District, Centro, Portugal
• elevation 0 m (0 ft)
Length 234 km (145 mi)
The Mondego (Rio Mondego), rising in the Serra da Estrela and flowing through Guarda District, is a largely mountain-fed river so its water remains relatively cool year-round. Typical seasonal surface temperatures in this upper basin are roughly 4–8 °C (39–46 °F) in winter, 8–14 °C (46–57 °F) in spring, 16–22 °C (61–72 °F) in summer and 10–16 °C (50–61 °F) in autumn. Local conditions can shift these values by a few degrees: shaded gorges, deeper pools and upstream, higher-elevation reaches are usually colder, while slower, shallower stretches warm more in hot spells.
Swimming in the Mondego within Guarda District is possible in many informal spots and is commonly practiced in summer where access and depth allow, but it is not universally permitted. Authorities and landowners may prohibit bathing near dams, bridges, water extraction points or where strong currents and underwater hazards present a danger; water-quality advisories may also restrict use after heavy rain or contamination events. For safety and legal reasons visitors should obey signage, avoid fast-flowing or engineered sections, and be aware of cold-water shock and hypothermia risks even in summer. Local municipal information gives the definitive guidance for permitted bathing locations.