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

27.0°C

Today

26.9°C

Yesterday

26.0°C

A Week Ago

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Water Temperature in Tapada Grande Lake today is 27°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 11 to August 11

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
AUG 4	26.0°C	29.9°C
AUG 5	26.0°C	29.9°C
AUG 6	25.8°C	29.9°C
AUG 7	25.9°C	29.9°C
AUG 8	25.9°C	29.9°C
AUG 9	25.9°C	29.9°C
AUG 10	26.9°C	29.9°C
AUG 11	27.0°C	29.9°C
AUG 12		29.9°C	27.1°C
AUG 13		29.9°C	27.3°C
AUG 14		29.9°C	27.4°C
AUG 15		29.9°C	27.6°C
AUG 16		29.9°C	27.7°C
AUG 17		29.9°C	27.9°C
AUG 18		29.9°C	28.0°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
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	23°C	29°C	34°C
August	25°C	30°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 Fluvial27.0°C

Tapada Grande Lake: Weather Forecast

August 12

° / °

clear sky

rain: 0% | wind:

August 13

° / °

clear sky

rain: 0% | wind:

August 14

° / °

clear sky

rain: 0% | wind:

August 15

° / °

partly cloudy

rain: 0% | 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 27°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.