Water temperature in Cascais in January

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Is it warm enough to swim in Cascais in January? Average water temperature in Cascais in January is 14.9°C and therefore is not suitable for comfortable swimming. The warmest sea in Cascais in January is 16.2°C, and the coldest is 13.2°C. Average high air temperature in Cascais in January is 14°C, and average low temperature is 8°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 January 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 January.

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 January	15.7°C	16.1°C	14.3°C	16.2°C
2 January	15.7°C	15.8°C	14.4°C	16.1°C
3 January	15.8°C	15.8°C	13.9°C	16°C
4 January	15.6°C	16°C	14.2°C	16°C
5 January	15.7°C	16°C	14.1°C	16.2°C
6 January	15.7°C	15.6°C	14.1°C	16°C
7 January	15.2°C	15.4°C	14.1°C	16.2°C
8 January	15.6°C	15.3°C	14°C	16.1°C
9 January	15.5°C	15.5°C	13.9°C	16°C
10 January	15.5°C	15.3°C	13.7°C	15.9°C
11 January	15.5°C	15.6°C	13.4°C	16°C
12 January	16°C	15.5°C	13.2°C	16°C
13 January	15.8°C	15.7°C	13.8°C	15.8°C
14 January	15.5°C	15.6°C	13.7°C	15.8°C
15 January	15.6°C	15.6°C	13.5°C	16°C

Day	2025	2024	Min	Max
16 January	15.4°C	16.1°C	13.5°C	16.1°C
17 January	15.5°C	16.2°C	13.8°C	16.2°C
18 January	15.3°C	16.1°C	13.4°C	16.1°C
19 January	15.3°C	15.8°C	13.6°C	15.8°C
20 January	15.2°C	15.4°C	13.7°C	15.7°C
21 January	15.4°C	15°C	13.7°C	15.8°C
22 January	15.6°C	15.2°C	13.7°C	15.6°C
23 January	15.2°C	15.5°C	13.7°C	16°C
24 January	15.3°C	15.4°C	13.8°C	15.8°C
25 January	15.2°C	15.4°C	13.6°C	15.6°C
26 January	15.2°C	15.3°C	13.5°C	15.5°C
27 January	15.5°C	15.4°C	13.6°C	15.6°C
28 January	15.6°C	15.5°C	13.7°C	15.8°C
29 January	15.4°C	16.1°C	13.7°C	16.1°C
30 January	15.4°C	15.5°C	13.7°C	15.7°C
31 January	15.2°C	16°C	13.6°C	16°C

Average water temperature in Cascais in January over a decade

2016	2017	2018	2019	2020
15.8°C	15.3°C	14.5°C	14.5°C	14.3°C

2021	2022	2023	2024	2025
14.1°C	14.6°C	15.2°C	15.6°C	15.5°C

Cascais sea state in January

Chart comparing the height of waves in Cascais in January 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 January

This data display average monthly climate indicators in Cascais in January 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 temperature14°C
Average LOW temperature8°C
Average rainfall days15 days
Average rainfall4.8''/122mm
Average daylight10h
Average sunshine5h
Average UV index2

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 January. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

	Avr	Min	Max
Monte Estoril	14.8°C	13°C	16.2°C
Praia do Guincho	14.9°C	12.9°C	16.3°C
Carcavelos	14.8°C	13.4°C	16.2°C
Parede	14.8°C	13.4°C	16.2°C
Paco de Arcos	14.8°C	13.4°C	16.1°C
Praia da Adraga	14.9°C	13.1°C	16.4°C
Cabo da Roca	14.9°C	13.1°C	16.4°C
Praia da Ursa	14.9°C	13.1°C	16.4°C
Praia da Aroeira	14.9°C	13.1°C	16.4°C
Alges	14.7°C	13.4°C	16.1°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.

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Date (day and month)

Water temperature: min 16°C

Average temperature Maximum temperature