Reservoir · San Martín de Valdeiglesias · Madrid

Embalse San Juan

Water quality, weather, location and official data for this inland bathing area.

Reservoir
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Surebic · CC BY-SA 4.0 · Wikimedia Commons

Now

Forecast for 18:00

AEMET · San Martín de Valdeiglesias
SkyOvercast with rain
Temperature13 °CFeels like 13 °C
Forecast rain100%
Humidity95%
WindE 14 km/hGusts 31 km/h
Maximum UV2

This is an official forecast for the stated period, not a physical observation taken at this bathing area.

Weather forecast

Hourly and daily outlook

AEMET · town of San Martín de Valdeiglesias

Next hours

Today18:0013 °COvercast with rainRain 100%Wind E 14 km/h
Today21:0012 °COvercast with rainRain 100%Wind E 13 km/h
Tomorrow00:0012 °COvercast with light rainRain 40%Wind NE 1 km/h
Tomorrow03:0013 °CMistRain 85%Wind SW 22 km/h
Tomorrow06:0011 °COvercastRain 85%Wind SW 25 km/h
Tomorrow09:0012 °CMistRain 100%Wind W 23 km/h
Tomorrow12:0014 °CMostly cloudyRain 100%Wind W 24 km/h
Tomorrow15:0015 °COvercast with thunderstorm y light rainRain 95%Wind W 26 km/h
Tomorrow18:0013 °CPartly cloudyRain 95%Wind SW 28 km/h
Tomorrow21:0011 °COvercastRain 40%Wind SW 20 km/h
Friday 1300:0011 °COvercastWind SW 14 km/h
Friday 1303:0011 °COvercastWind W 24 km/h
Friday 1306:0011 °COvercast with light rainWind SW 18 km/h

Today’s weather

At 18:00, the forecast indicates sky conditions of overcast with rain and a forecast temperature of 13 °C. This period also has a feels-like temperature of 13 °C, 100% chance of rain and wind E at 14 km/h. For the day as a whole, the published forecast gives a high of 13 °C and a maximum UV index of 2.

Next days

Today

Overcast with light rain

Low 12°High 13°
MorningOvercast with light rainAfternoonOvercast with rain
☂ Rain 100%↝ S · 11 km/hGusts 44 km/hHumidity 95–100%☀ UV 2

Tomorrow

Overcast with light rain

Low 11°High 16°
MorningOvercast with light rainAfternoonMostly cloudy with thunderstorm y light rain
☂ Rain 100%↝ SW · 10 km/hGusts 56 km/hHumidity 75–100%☀ UV 2

Friday 13

Partly cloudy

Low 11°High 12°
☂ Rain 100%↝ SW · 20 km/hGusts 41 km/hHumidity 91–94%☀ UV 2

Saturday 14

Cloudy with rain

Low 10°High 16°
☂ Rain 100%↝ SW · 15 km/hHumidity 75–100%☀ UV 2

Characteristics

About this bathing area

About this reservoir

Embalse San Juan identifies an inland bathing area in San Martín de Valdeiglesias, Madrid, also associated with the name Virgen de la Nueva. The town has two authorised bathing areas at this reservoir: Virgen de la Nueva and El Muro. The former also has water-based activities and boat hire in its surroundings, while the water surface is managed by the Confederación Hidrográfica del Tajo.

Published facilities

Facilities

Water-sports hire

Activities

Published information identifies water-sports hire.

Water-quality monitoring

Bathing-water quality

NÁYADE source ↗
Latest sample01/09/2025
E. coli1 UFC/100 ml
Enterococci1 UFC/100 ml
Annual classificationEXCELLENT2025 · historical

Water quality

The latest microbiological sample was taken on 1/09/2025. The available annual classification for 2025 is excellent; this is a historical assessment, not confirmation of today’s conditions.

Coastal flags, tides, waves and jellyfish are not shown because they do not apply to this type of bathing area.

Location

Directions

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Nearby

Nearby Reservoirs

Cazalegas

Embalse Cazalegas

50.8 kmView details →