Water temperature in Santo Amaro in September

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Is it warm enough to swim in Santo Amaro in September? Average water temperature in Santo Amaro in September is 18.6°C and therefore is not suitable for comfortable swimming. The warmest sea in Santo Amaro in September is 20.9°C, and the coldest is 15°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Santo Amaro

Changes water temperature in Santo Amaro in September 2025, 2024

To get an accurate forecast for the water temperature in Santo Amaro for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Santo Amaro, 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	17.8°C	17.4°C	17.2°C	19.4°C
2 September	18.6°C	16.3°C	16.3°C	19.5°C
3 September	18.7°C	15.3°C	15.3°C	19.5°C
4 September	18.7°C	15.7°C	15.7°C	19.6°C
5 September	18°C	15.7°C	15.7°C	19.8°C
6 September		15°C	15°C	19.8°C
7 September		16.1°C	16.1°C	20°C
8 September		16.4°C	16.4°C	20.1°C
9 September		16°C	16°C	20.1°C
10 September		15.5°C	15.5°C	20.2°C
11 September		16.4°C	16.4°C	20.4°C
12 September		16°C	16°C	20.4°C
13 September		16.7°C	16.7°C	20.7°C
14 September		16.3°C	16.3°C	20.7°C
15 September		16.6°C	16.3°C	20.6°C

Day	2024	Min	Max
16 September	17.3°C	16°C	20.7°C
17 September	16.9°C	16°C	20.7°C
18 September	17.5°C	16°C	20.7°C
19 September	17.5°C	16°C	20.9°C
20 September	17.7°C	16°C	20.9°C
21 September	18.2°C	15.9°C	20.9°C
22 September	18.1°C	15.8°C	20.6°C
23 September	18.1°C	16°C	20.7°C
24 September	18.1°C	16°C	20.6°C
25 September	17.8°C	16°C	20.7°C
26 September	18.6°C	16.1°C	20.7°C
27 September	18.5°C	16.3°C	20.7°C
28 September	17.7°C	16.2°C	20.7°C
29 September	17.7°C	15.8°C	20.6°C
30 September	18.4°C	16.2°C	20.5°C

Santo Amaro water temp chart in September

Average water temperature in Santo Amaro in September over a decade

2015	2016	2017	2018	2019
17.9°C	18.6°C	16.8°C	19.1°C	18°C

2020	2021	2022	2023	2024
19.1°C	19.2°C	19°C	18.8°C	17°C

Santo Amaro sea state in September

Chart comparing the height of waves in Santo Amaro 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 Santo Amaro in September

Santo Amaro 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
Estoril	18.4°C	15°C	20.9°C
Cascais	18.4°C	15.1°C	20.9°C
Monte Estoril	18.4°C	15.2°C	20.8°C
Praia do Guincho	18.3°C	15°C	20.8°C
Moscavide	19.8°C	16.3°C	23.5°C
Sao Joao da Talha	19.8°C	16.3°C	23.5°C
Alcochete	19.8°C	16.4°C	23.6°C
Praia da Adraga	18.2°C	14.3°C	20.8°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

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Our report for Santo Amaro 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