Santa Clara Reservoir — Current Water Temperature, Annual Trends and Forecast

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

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

Current Water Temperature

20.0°C

Today

20.2°C

Yesterday

21.8°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 Santa Clara Reservoir today is 20°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 May 9 to June 9

Table of Daily Sea Temperature Data

Date	Current	Average	Forecast
JUN 2	21.4°C	27.5°C
JUN 3	20.9°C	27.5°C
JUN 4	21.0°C	27.5°C
JUN 5	21.0°C	27.5°C
JUN 6	21.0°C	27.5°C
JUN 7	20.2°C	27.5°C
JUN 8	20.0°C	27.5°C
JUN 10		27.5°C	20.4°C
JUN 11		27.5°C	20.8°C
JUN 12		27.5°C	21.1°C
JUN 13		27.5°C	21.5°C
JUN 14		27.5°C	21.9°C
JUN 15		27.5°C	22.3°C
JUN 16		27.5°C	22.6°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	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	12°C	17°C	21°C
December	10°C	13°C	15°C

Santa Clara Reservoir: Water Temperature by Location

🇵🇹 Portugal > Beja District

Santa Clara Reservoir: Weather Forecast

June 9

° / °

partly cloudy

rain: 0% | wind:

June 10

° / °

clear sky

rain: 0% | wind:

June 11

° / °

clear sky

rain: 0% | wind:

June 12

° / °

partly cloudy

rain: 3% | wind:

June 13

° / °

overcast

rain: 3% | wind:

June 14

° / °

fog

rain: 3% | wind:

Location & Local Information

The Albufeira da Barragem de Santa Clara (Portuguese name) is a sizeable inland reservoir in the Beja District whose water temperatures vary with the seasons and local weather. In winter the surface usually cools to roughly 9–14 °C (48–57 °F), while spring sees a gradual rise toward 12–20 °C (54–68 °F) as days lengthen. Peak summer surface temperatures commonly reach 20–28 °C (68–82 °F) in warm, calm spells, especially in shallow bays, and autumn typically brings a decline to about 13–22 °C (55–72 °F). These figures are broad averages: shallow areas warm faster than deep sections, and daily or wind-driven fluctuations, as well as occasional thermal stratification, can alter conditions locally.

Swimming in the Albufeira is commonly practiced and generally permitted as the reservoir is used for leisure and informal bathing by locals and visitors. However, permission and safe access depend on municipal rules, water quality monitoring and specific signage; at times authorities may restrict swimming for safety, water-supply protection or when algal blooms and strong currents are present. Visitors should follow posted regulations, be mindful of boat traffic and submerged hazards, and check current water-quality and access updates before entering the water.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Santa Clara Reservoir?

Water Temperature in Santa Clara Reservoir today is 20°C.

What is the water temperature in Santa Clara Reservoir during the summer months?

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

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

Swimming is possible in parts of Santa Clara Reservoir in Portugal, typically undertaken as unsupervised shore or boat/kayak swimming since there are few formal bathing facilities or lifeguards, so check local signs, access rules and water-quality or safety information before entering.