Iznajar Reservoir — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Iznajar Reservoir, trends, monthly ranges and the forecast for the coming days.

Iznajar Reservoir, Spain © By Mussklprozz, CC BY-SA 3.0

Current Water Temperature

25.0°C

Today

24.5°C

Yesterday

25.7°C

A Week Ago

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Water Temperature in Iznajar Reservoir today is 25°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 May 30 to June 30

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
JUN 23	25.7°C	28.2°C
JUN 24	25.7°C	28.2°C
JUN 25	24.9°C	28.2°C
JUN 26	24.9°C	28.2°C
JUN 27	24.5°C	28.2°C
JUN 28	24.5°C	28.2°C
JUN 29	24.5°C	28.2°C
JUN 30	24.5°C	28.2°C
JUL 1		29.0°C	25.2°C
JUL 2		29.0°C	25.4°C
JUL 3		29.0°C	25.6°C
JUL 4		29.0°C	25.8°C
JUL 5		29.0°C	26.0°C
JUL 6		29.0°C	26.2°C
JUL 7		29.0°C	26.4°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	12°C
February	8°C	12°C	15°C
March	10°C	14°C	18°C
April	12°C	17°C	20°C
May	16°C	21°C	26°C
June	22°C	28°C	34°C
July	24°C	29°C	34°C
August	24°C	29°C	34°C
September	24°C	29°C	34°C
October	14°C	19°C	22°C
November	10°C	15°C	19°C
December	8°C	12°C	15°C

Iznajar Reservoir: Water Temperature by Location

🇪🇸 Spain > Andalusia

Iznajar Reservoir: Weather Forecast

July 1

° / °

slight rain showers

rain: 25% | wind:

July 2

° / °

overcast

rain: 8% | wind:

July 3

° / °

overcast

rain: 0% | wind:

July 4

° / °

partly cloudy

rain: 0% | wind:

Location & Local Information

The Embalse de Iznájar, the largest reservoir in Andalusia, experiences clear seasonal variation in water temperature typical of inland Mediterranean lakes. In winter the surface commonly falls to about 8–12 °C (46–54 °F), while spring sees a rise toward roughly 12–18 °C (54–64 °F) as the sun warms the shallows. Peak summer temperatures often reach 20–26 °C (68–79 °F) in July and August, especially in sheltered bays and near shallow beaches, and autumn gradually cools back to around 16–20 °C (61–68 °F) before winter sets in. These ranges can vary year to year depending on rainfall, reservoir level and wind, with shallow areas warming faster than deeper channels.

Swimming at Embalse de Iznájar is commonly practiced and tolerated in many of the reservoir’s designated beach and recreational zones because the site functions both as a water supply and a recreational area, and local authorities typically allow bathing where water quality and safety are monitored. However, access and rules can vary by shore and season: some areas are intended more for boating or fishing, and boat traffic, changing water levels, underwater hazards and occasional algal growths mean swimmers should follow signage, use marked swimming spots and heed local guidance. Water quality monitoring makes many spots safe, but checking current local advisories before entering is recommended.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Iznajar Reservoir?

Water Temperature in Iznajar Reservoir today is 25°C.

What is the water temperature in Iznajar Reservoir during the summer months?

The water temperature in Iznajar Reservoir in summer fluctuates in the range of 22°C - 34°C.

Is it possible to swim in Iznajar Reservoir (Spain) and what are the possibilities for this?

Yes — you can swim in parts of the Iznájar Reservoir where informal beaches and sheltered coves are used for bathing and water sports like kayaking or paddleboarding, but conditions vary, lifeguards are not guaranteed, boat traffic and changing water levels can pose hazards, and local or temporary restrictions and water-quality advisories should be checked before entering.