Daroeira Reservoir — Current Water Temperature, Annual Trends and Forecast

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

Covão dos Conchos Lake, Portugal © By larahcv, CC0

Current Water Temperature

23.7°C

Today

23.6°C

Yesterday

24.8°C

A Week Ago

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Water Temperature in Daroeira Reservoir today is 23.7°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 July 31 to August 31

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
AUG 24	24.8°C	28.8°C
AUG 25	24.8°C	28.8°C
AUG 26	24.8°C	28.8°C
AUG 27	24.0°C	28.8°C
AUG 28	24.0°C	28.8°C
AUG 29	24.0°C	28.8°C
AUG 30	23.6°C	28.8°C
AUG 31	23.7°C	28.8°C
SEP 1		32.0°C	24.1°C
SEP 2		32.0°C	24.5°C
SEP 3		32.0°C	24.9°C
SEP 4		32.0°C	25.4°C
SEP 5		32.0°C	25.8°C
SEP 6		32.0°C	26.2°C
SEP 7		32.0°C	26.6°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	7°C	11°C	14°C
February	10°C	14°C	18°C
March	12°C	17°C	20°C
April	14°C	19°C	22°C
May	16°C	22°C	28°C
June	20°C	28°C	34°C
July	22°C	28°C	34°C
August	23°C	29°C	34°C
September	26°C	32°C	34°C
October	17°C	21°C	24°C
November	13°C	18°C	21°C
December	10°C	13°C	15°C

Daroeira Reservoir: Water Temperature by Location

🇵🇹 Portugal > Setúbal District

Daroeira Reservoir: Weather Forecast

September 1

° / °

overcast

rain: 0% | wind:

September 2

° / °

mainly clear

rain: 0% | wind:

September 3

° / °

overcast

rain: 0% | wind:

September 4

° / °

fog

rain: 0% | wind:

September 5

° / °

partly cloudy

rain: 0% | wind:

Location & Local Information

The reservoir commonly known as Albufeira da Barragem da Daroeira experiences distinct seasonal surface temperatures typical of inland water bodies in the Setúbal District. In winter, surface temperatures often range from about 8–14 °C (46–57 °F), rising in spring to roughly 12–18 °C (54–64 °F). Summer brings the warmest conditions, with surface waters frequently between 20–26 °C (68–79 °F), while autumn cools again to around 14–20 °C (57–68 °F). These figures can vary with weather patterns, depth, and local inflows: shallow bays warm faster in calm sun, whereas deeper or shaded areas stay cooler. Short-term swings after heavy rain or cold spells are common.

Swimming at Albufeira da Barragem da Daroeira is a recreational activity many people undertake, but it is subject to local rules and safety considerations. There are often no lifeguards or formal bathing facilities, and authorities may restrict access at times to protect drinking-water quality, to respond to algal blooms, or during reservoir management operations. Submerged hazards, changing currents near outlets, and variable visibility mean swimmers should exercise caution, check any posted notices, and avoid lone or risky dives. When conditions are good and rules permit, the summer temperatures make the reservoir comfortable for bathing, while cooler months are bracing and less suited to prolonged swims.

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Frequently Asked Questions

What is the current water temperature in Daroeira Reservoir?

Water Temperature in Daroeira Reservoir today is 23.7°C.

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

The water temperature in Daroeira Reservoir in summer fluctuates in the range of 20°C - 34°C.

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

Swimming in Daroeira Reservoir is generally possible, but access, water quality and local regulations can vary, so visitors usually swim from the shore or practice open-water swimming and other non-motorized activities like kayaking or paddleboarding where permitted while observing safety precautions and any posted rules.