Tapada Grande Lake — Current Water Temperature, Annual Trends and Forecast

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

Bornos Reservoir, Spain © By El Pantera, CC BY-SA 4.0

Current Water Temperature

20.8°C

Today

21.0°C

Yesterday

22.4°C

A Week Ago

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Water Temperature in Tapada Grande Lake today is 20.8°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 10 to June 10

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
JUN 2	22.1°C	27.4°C
JUN 3	21.7°C	27.4°C
JUN 4	21.8°C	27.4°C
JUN 5	21.8°C	27.4°C
JUN 6	21.8°C	27.4°C
JUN 7	21.0°C	27.4°C
JUN 8	20.8°C	27.4°C
JUN 10		27.4°C	21.1°C
JUN 11		27.4°C	21.5°C
JUN 12		27.4°C	21.8°C
JUN 13		27.4°C	22.1°C
JUN 14		27.4°C	22.5°C
JUN 15		27.4°C	22.8°C
JUN 16		27.4°C	23.1°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	17°C	23°C	28°C
June	20°C	27°C	34°C
July	26°C	32°C	34°C
August	26°C	32°C	34°C
September	26°C	32°C	34°C
October	17°C	21°C	24°C
November	11°C	17°C	21°C
December	9°C	13°C	15°C

Tapada Grande Lake: Water Temperature by Location

🇵🇹 Portugal > Beja District

Praia Fluvial20.8°C

Tapada Grande Lake: Weather Forecast

June 9

° / °

clear sky

rain: 0% | wind:

June 10

° / °

clear sky

rain: 0% | wind:

June 11

° / °

clear sky

rain: 3% | wind:

June 12

° / °

overcast

rain: 3% | wind:

June 13

° / °

partly cloudy

rain: 5% | wind:

June 14

° / °

overcast

rain: 12% | wind:

Location & Local Information

Tapada Grande, located in Beja District in the Alentejo region of Portugal, is a freshwater reservoir that experiences notable seasonal variation in surface temperature. In winter months (December–February) water typically cools to about 8–14 °C (46–57 °F), while spring (March–May) gradually warms from roughly 12–18 °C (54–64 °F). Summer (June–August) brings the warmest conditions, with surface temperatures commonly between 22–28 °C (72–82 °F), and early autumn (September–November) usually sees a slow decline to approximately 16–22 °C (61–72 °F). These ranges reflect typical shallow-reservoir behavior in southern Portugal: warmer, pleasant swimming temperatures in summer and cooler, bracing water outside the peak season.

Swimming at Tapada Grande is possible and often enjoyed in the warmer months, but it depends on local rules, water quality and safety considerations. Because the reservoir may serve irrigation, wildlife habitat or other uses, authorities sometimes impose restrictions; water quality can vary after heavy rains and there are few formal lifeguard services, so designated safe access points and posted signs should be consulted. In short, recreational swimming is generally allowed when conditions are suitable, particularly in summer when temperatures are most comfortable, but visitors should verify current regulations and exercise standard water-safety precautions.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Tapada Grande Lake?

Water Temperature in Tapada Grande Lake today is 20.8°C.

What is the water temperature in Tapada Grande Lake during the summer months?

The water temperature in Tapada Grande Lake in summer fluctuates in the range of 20°C - 34°C.

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

Swimming in Tapada Grande is possible in its natural water spots and informal bathing areas, but because there may be no lifeguards or official water-quality checks you should follow local signage, use marked bathing zones when present, or join organized water-sport providers for a safer experience.