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San Martín de la Vega — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in San Martín de la Vega, trends, monthly ranges and the forecast for the coming days.

Jarama River, Spain
Jarama River, Spain © By Digigalos, CC BY-SA 2.5

Current Water Temperature

18.1°C
Today
18.2°C
Yesterday
21.4°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in San Martín de la Vega today is 18.1°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

From September 10 to October 11

Table of Daily Sea Temperature Data

Date Current Average Forecast
OCT 421.4°C15.0°C
OCT 520.6°C15.0°C
OCT 620.4°C15.0°C
OCT 720.4°C15.0°C
OCT 819.8°C15.0°C
OCT 918.5°C15.0°C
OCT 1018.2°C15.0°C
OCT 1118.1°C15.0°C
OCT 1215.0°C17.9°C
OCT 1315.0°C17.8°C
OCT 1415.0°C17.6°C
OCT 1515.0°C17.5°C
OCT 1615.0°C17.3°C
OCT 1715.0°C17.2°C
OCT 1815.0°C17.0°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
January3°C7°C9°C
February5°C9°C11°C
March6°C9°C12°C
April8°C13°C18°C
May11°C17°C24°C
June19°C24°C28°C
July18°C23°C28°C
August18°C23°C29°C
September17°C21°C26°C
October11°C15°C18°C
November7°C11°C14°C
December5°C9°C12°C

San Martín de la Vega: Weather Forecast

October 11

° / °
overcast
rain: 0% | wind:

October 12

° / °
overcast
rain: 0% | wind:

October 13

° / °
partly cloudy
rain: 0% | wind:

October 14

° / °
overcast
rain: 0% | wind:

October 15

° / °
overcast
rain: 0% | wind:

Location & Local Information

San Martín de la Vega, a municipality southeast of Madrid, is bordered by a modest lake/reservoir used mainly for landscape and local irrigation rather than as a formal bathing area. Water temperatures there follow the typical continental pattern of central Spain: in winter surface temperatures often fall to around 6–10 °C (43–50 °F), spring usually warms the water to roughly 10–18 °C (50–64 °F), peak summer temperatures commonly reach about 18–26 °C (64–79 °F), and autumn sees a decline back toward 12–18 °C (54–64 °F). Actual figures vary year by year with rainfall, depth, and weather; shallow margins warm faster while deeper sections stay cooler.

Regarding swimming, official access is generally restricted or discouraged at many small reservoirs around Madrid, and the lake near San Martín de la Vega is no exception in practice: local regulations, water-quality considerations, lack of lifeguards, variable depths and submerged hazards make formal bathing uncommon or prohibited. That said, informal swims can occur in hot months where temperatures approach the upper summer range, but these carry safety and legal risks, so it’s advisable to check current municipal rules and water-quality notices before entering.

Nearby Locations

Frequently Asked Questions

What is the current water temperature in San Martín de la Vega?
Water Temperature in San Martín de la Vega today is 18.1°C.
What is the water temperature in San Martín de la Vega during the summer months?
The water temperature in San Martín de la Vega in summer fluctuates in the range of 18°C - 29°C.
Is it possible to swim in San Martín de la Vega (Spain) in Jarama and what are the possibilities for this?
Swimming in the Jarama at San Martín de la Vega is generally not recommended or officially allowed due to lack of authorized bathing areas, variable water quality and safety risks, so visitors should use local municipal pools or the region’s designated reservoirs and monitored bathing sites (for example the Embalse de San Juan) for safe, legal swimming.