Water temperature in Monte Estoril in September

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Is it warm enough to swim in Monte Estoril in September? Average water temperature in Monte Estoril in September is 18.4°C and therefore is not suitable for comfortable swimming. The warmest sea in Monte Estoril in September is 20.8°C, and the coldest is 15.2°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Monte Estoril

Changes water temperature in Monte Estoril in September 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 September	17.4°C	16.9°C	16.9°C	19.3°C
2 September	18.5°C	16.1°C	16.1°C	19.4°C
3 September	18.6°C	15.4°C	15.4°C	19.3°C
4 September	18.3°C	15.5°C	15.5°C	19.4°C
5 September	17.6°C	15.6°C	15.6°C	19.4°C
6 September		15.2°C	15.2°C	19.5°C
7 September		15.6°C	15.6°C	19.9°C
8 September		16.1°C	16.1°C	19.9°C
9 September		15.9°C	15.9°C	19.9°C
10 September		15.7°C	15.7°C	20.1°C
11 September		16°C	16°C	20.3°C
12 September		16.5°C	16.5°C	20.3°C
13 September		16.6°C	16.6°C	20.4°C
14 September		16.3°C	16.3°C	20.6°C
15 September		15.9°C	15.9°C	20.6°C

Day	2024	Min	Max
16 September	16.5°C	15.9°C	20.6°C
17 September	16°C	15.8°C	20.6°C
18 September	16.4°C	16°C	20.6°C
19 September	16.9°C	16°C	20.6°C
20 September	16.6°C	16°C	20.8°C
21 September	16.9°C	15.9°C	20.8°C
22 September	16.9°C	15.7°C	20.6°C
23 September	17.3°C	15.9°C	20.6°C
24 September	17.5°C	15.9°C	20.6°C
25 September	17.4°C	15.9°C	20.7°C
26 September	17.9°C	16°C	20.7°C
27 September	18°C	16.2°C	20.7°C
28 September	17.7°C	15.9°C	20.6°C
29 September	17.3°C	15.2°C	20.6°C
30 September	17.8°C	15.6°C	20.4°C

Monte Estoril water temp chart in September

Average water temperature in Monte Estoril in September over a decade

2015	2016	2017	2018	2019
17.7°C	18.3°C	16.7°C	18.4°C	17.6°C

2020	2021	2022	2023	2024
18.5°C	18.8°C	18.4°C	18.3°C	16.5°C

Monte Estoril sea state in September

Chart comparing the height of waves in Monte Estoril in September 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.

Waves height in Monte Estoril in September

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

	Avr	Min	Max
Praia do Guincho	18.3°C	15°C	20.8°C
Paco de Arcos	18.6°C	15.8°C	21.2°C
Cabo da Roca	18.2°C	14.3°C	20.8°C
Praia da Ursa	18.2°C	14.3°C	20.8°C
Praia da Aroeira	18.2°C	14.3°C	20.8°C
Parede	18.6°C	15.3°C	20.9°C
Sintra	18.1°C	14°C	20.7°C
Azenhas do Mar	18.1°C	14°C	20.7°C
Praia das Macas	18.1°C	14°C	20.7°C
Praia Grande	18.1°C	14°C	20.7°C

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Our report for Monte Estoril 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