Côa River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Côa River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Côa River today is 19.2°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 | 22.4°C | 23.0°C | |
| AUG 25 | 22.4°C | 23.0°C | |
| AUG 26 | 22.4°C | 23.0°C | |
| AUG 27 | 20.0°C | 23.0°C | |
| AUG 28 | 20.0°C | 23.0°C | |
| AUG 29 | 19.6°C | 23.0°C | |
| AUG 30 | 19.2°C | 23.0°C | |
| AUG 31 | 19.2°C | 23.0°C | |
| SEP 1 | 21.0°C | 19.3°C | |
| SEP 2 | 21.0°C | 19.4°C | |
| SEP 3 | 21.0°C | 19.5°C | |
| SEP 4 | 21.0°C | 19.6°C | |
| SEP 5 | 21.0°C | 19.7°C | |
| SEP 6 | 21.0°C | 19.7°C | |
| SEP 7 | 21.0°C | 19.8°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 | 3°C | 7°C | 9°C |
| February | 5°C | 9°C | 11°C |
| March | 6°C | 9°C | 12°C |
| April | 8°C | 12°C | 16°C |
| May | 11°C | 16°C | 21°C |
| June | 16°C | 22°C | 28°C |
| July | 18°C | 22°C | 27°C |
| August | 18°C | 23°C | 27°C |
| September | 17°C | 21°C | 26°C |
| October | 11°C | 15°C | 18°C |
| November | 7°C | 11°C | 14°C |
| December | 5°C | 9°C | 12°C |
Côa River: Water Temperature by Location
Côa River: Weather Forecast
September 1
September 2
September 3
September 4
September 5
Location & Local Information
The Rio Côa, flowing through the Guarda District in northeastern Portugal, typically has cool to mildly warm water depending on the season and specific stretch. In winter the river often ranges from about 5–12 °C (41–54 °F), with colder pockets in shaded gorges and higher tributaries. Spring temperatures commonly rise to roughly 8–16 °C (46–61 °F) as flows increase and air temperatures climb. In summer the most accessible pools and slower reaches can warm to around 18–26 °C (64–79 °F), though deep or fast-flowing sections stay cooler. During autumn temperatures usually fall back to roughly 12–20 °C (54–68 °F). These figures are approximate and vary with recent rainfall, drought conditions, altitude and local morphology such as reservoirs or narrow canyons that affect heat retention.
Swimming in the Rio Côa is possible in many informal spots and is practiced locally in the warmer months, but it is not universally sanctioned. Some areas are protected for their archaeological and ecological value, notably within the Côa Valley Archaeological Park, where access and activities may be restricted to preserve rock art and habitats. Safety considerations — strong currents after rains, sudden depth changes, variable water quality and the usual absence of lifeguards — mean visitors should heed local signage, seasonal advisories and guidance from municipal authorities before entering the water.