Jarama River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Jarama River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Jarama River today is 17.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 | 20.9°C | 15.0°C | |
| OCT 5 | 20.2°C | 15.0°C | |
| OCT 6 | 20.1°C | 15.0°C | |
| OCT 7 | 19.8°C | 15.0°C | |
| OCT 8 | 19.4°C | 15.0°C | |
| OCT 9 | 18.3°C | 15.0°C | |
| OCT 10 | 18.0°C | 15.0°C | |
| OCT 11 | 17.8°C | 15.0°C | |
| OCT 12 | 15.0°C | 17.7°C | |
| OCT 13 | 15.0°C | 17.5°C | |
| OCT 14 | 15.0°C | 17.4°C | |
| OCT 15 | 15.0°C | 17.2°C | |
| OCT 16 | 15.0°C | 17.1°C | |
| OCT 17 | 15.0°C | 17.0°C | |
| OCT 18 | 15.0°C | 16.8°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 | 17°C |
| May | 11°C | 17°C | 23°C |
| June | 19°C | 24°C | 28°C |
| July | 18°C | 23°C | 28°C |
| August | 18°C | 23°C | 29°C |
| September | 17°C | 21°C | 26°C |
| October | 11°C | 15°C | 18°C |
| November | 6°C | 10°C | 14°C |
| December | 5°C | 9°C | 12°C |
Jarama River: Water Temperature by Location
Jarama River: Weather Forecast
October 11
October 12
October 13
October 14
October 15
Location & Local Information
Source Peña Cebollera
• location Sierra de Ayllón
• coordinates 41°9′58″N 3°32′18″W
• elevation 2,119 m (6,952 ft)
Mouth Tagus
• location near Aranjuez
• coordinates 40°1′51″N 3°38′59″W
• elevation 494 m (1,621 ft)
Length 194 km (121 mi)
The Jarama (Río Jarama) near Madrid experiences marked seasonal changes in water temperature linked to rainfall, flow and depth. In winter the river commonly cools to roughly 4–8 °C (39–46 °F), while spring temperatures typically rise to about 8–15 °C (46–59 °F) as snowmelt and fresher flows moderate conditions. In summer, shallow stretches exposed to sun can warm to roughly 18–24 °C (64–75 °F), though deep or fast-flowing parts remain cooler. During autumn temperatures usually fall back into the 10–16 °C (50–61 °F) range. These figures vary locally and year to year depending on droughts, upstream reservoirs and recent rainfall, so spot measurements can differ from seasonal averages.
Swimming in the Jarama is not widely endorsed as an organized activity and many stretches are not official bathing areas. Authorities often discourage swimming because water quality can be variable—affected by agricultural runoff, treated or untreated discharges and occasional algal growth—and because rivers contain hidden hazards such as currents, submerged debris and changing depths without lifeguard supervision. Informal bathing by locals does occur in warmer months at calm sections, but for safety and legal reasons it is advisable to follow municipal signage, water-quality advisories and use designated swimming sites when available.