Water temperature in Cascais in June

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Is it warm enough to swim in Cascais in June? Average water temperature in Cascais in June is 17.4°C and therefore is not suitable for comfortable swimming. The warmest sea in Cascais in June is 19.9°C, and the coldest is 14.7°C. Average high air temperature in Cascais in June is 24°C, and average low temperature is 15°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Cascais

Changes water temperature in Cascais in June 2025, 2024

To get an accurate forecast for the water temperature in Cascais for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Cascais, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of June.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 June	16.7°C	16.8°C	14.9°C	19.4°C
2 June	16.8°C	17°C	15.3°C	19.1°C
3 June	16.9°C	17.2°C	15.4°C	19.5°C
4 June	16.7°C	16.7°C	15.6°C	19.4°C
5 June	16.7°C	16.9°C	15.5°C	19.9°C
6 June	16.8°C	16.9°C	15.5°C	19.5°C
7 June	16.7°C	17°C	15.4°C	18.9°C
8 June	17°C	17.3°C	15.4°C	18.5°C
9 June	17.1°C	17.2°C	15.6°C	18.5°C
10 June	17.4°C	17.1°C	15.7°C	19.4°C
11 June	17.8°C	17.4°C	15.8°C	19.5°C
12 June	18.3°C	16.9°C	15.4°C	19.5°C
13 June	17.9°C	16.9°C	14.7°C	19.4°C
14 June	17.6°C	17°C	15.5°C	19.7°C
15 June	17.6°C	16.6°C	15.5°C	19.7°C

Day	2025	2024	Min	Max
16 June	17.8°C	16.5°C	15.4°C	19.7°C
17 June	18.6°C	16.8°C	15.4°C	19.8°C
18 June	18.8°C	17.5°C	15.6°C	19°C
19 June	17.4°C	17.1°C	15.6°C	19.4°C
20 June	17.8°C	16.7°C	15.4°C	19.6°C
21 June	17.9°C	16.5°C	15.4°C	19.5°C
22 June		16.9°C	15.7°C	19.4°C
23 June	18.1°C	17.2°C	15.8°C	19.6°C
24 June	18.2°C	16.5°C	16.1°C	19.1°C
25 June	17.9°C	16.5°C	16.2°C	19.3°C
26 June	18°C	16.6°C	16°C	19.4°C
27 June	18.8°C	16.8°C	16.2°C	19.5°C
28 June	18.6°C	16.6°C	15.8°C	19.2°C
29 June	19.1°C	16.3°C	15.8°C	19.6°C
30 June	19.2°C	16.3°C	15°C	19.9°C

Average water temperature in Cascais in June over a decade

2016	2017	2018	2019	2020
17.6°C	18.1°C	16.4°C	16.3°C	17.5°C

2021	2022	2023	2024	2025
16.4°C	17.8°C	18.7°C	16.9°C	17.7°C

Cascais sea state in June

Chart comparing the height of waves in Cascais in June over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Weather and climate in Cascais in June

This data display average monthly climate indicators in Cascais in June based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

Average HIGH temperature24°C
Average LOW temperature15°C
Average rainfall days5 days
Average rainfall1''/25mm
Average daylight15h
Average sunshine10h
Average UV index9

Cascais water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Temperature in neighboring cities

The nearest locations with the average water temperature in June. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Monte Estoril	17.5°C	14.7°C	20°C
Praia do Guincho	17.3°C	14.3°C	19.8°C
Carcavelos	17.6°C	15.1°C	20.5°C
Parede	17.6°C	15.1°C	20.5°C
Paco de Arcos	17.8°C	15.1°C	21.1°C
Praia da Adraga	17.2°C	13.8°C	19.7°C
Cabo da Roca	17.2°C	13.8°C	19.7°C
Praia da Ursa	17.2°C	13.8°C	19.7°C
Praia da Aroeira	17.2°C	13.8°C	19.7°C
Alges	18°C	15.3°C	21.7°C

Cascais photo gallery

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Our report for Cascais is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

Region

Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature