Water temperature in Tres Arroyos in September

Is it warm enough to swim in Tres Arroyos in September? Average water temperature in Tres Arroyos in September is 10.6°C and therefore is not suitable for comfortable swimming. The warmest sea in Tres Arroyos in September is 14.2°C, and the coldest is 8.5°C. Average high air temperature in Tres Arroyos in September is 17°C, and average low temperature is 5°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Tres Arroyos

Changes water temperature in Tres Arroyos in September 2025, 2024

To get an accurate forecast for the water temperature in Tres Arroyos for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Tres Arroyos, 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	10°C	8.6°C	8.5°C	11.1°C
2 September	10.1°C	8.8°C	8.7°C	11°C
3 September	10.2°C	9.2°C	8.8°C	11°C
4 September	10°C	9.2°C	8.8°C	11.1°C
5 September	9.8°C	9.2°C	8.6°C	11°C
6 September	9.9°C	9.2°C	9°C	11.2°C
7 September	10.1°C	9.3°C	9.1°C	11.4°C
8 September	10.5°C	9.5°C	9.4°C	11.7°C
9 September	10.6°C	9.5°C	9.4°C	12°C
10 September	10.3°C	9.5°C	9.5°C	13.2°C
11 September	10.4°C	9.6°C	9.3°C	13.4°C
12 September	10.6°C	9.9°C	9.5°C	12.8°C
13 September	10.4°C	9.9°C	9.4°C	12.6°C
14 September	10.7°C	9.8°C	9.5°C	12.6°C
15 September	10.9°C	10°C	9.5°C	13°C

Day	2025	2024	Min	Max
16 September	11.7°C	9.8°C	9.4°C	14°C
17 September	11.6°C	10.2°C	9.2°C	13.2°C
18 September	11.4°C	10.1°C	9.4°C	13.6°C
19 September	11.3°C	10.5°C	9.6°C	13.5°C
20 September	10.6°C	10.5°C	9.7°C	13.2°C
21 September	11.3°C	10.5°C	9.7°C	12.6°C
22 September	11.3°C	11.2°C	9.6°C	13.5°C
23 September	11.2°C	11.4°C	9.5°C	13.5°C
24 September	11.7°C	11.5°C	9.3°C	14.2°C
25 September	11.4°C	11°C	9.3°C	13.8°C
26 September	9.8°C	11.2°C	9.7°C	14.1°C
27 September		11.5°C	9.9°C	13.8°C
28 September		11.9°C	10.4°C	13.1°C
29 September		12°C	10°C	13°C
30 September		12°C	10.5°C	13.3°C

Tres Arroyos water temp chart in September

Average water temperature in Tres Arroyos in September over a decade

2015	2016	2017	2018	2019
10.7°C	10.9°C	11.8°C	10.8°C	10.2°C

2020	2021	2022	2023	2024
9.9°C	11°C	10.9°C	9.9°C	10.2°C

Tres Arroyos sea state in September

Chart comparing the height of waves in Tres Arroyos 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 Tres Arroyos in September

Weather and climate in Tres Arroyos in September

This data display average monthly climate indicators in Tres Arroyos in September 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 temperature17°C
Average LOW temperature5°C
Average humidity
71
Average rainfall days8 days
Average rainfall2.6''/66mm
Average sunshine6.4h

Tres Arroyos 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
Balneario Oceano	10.6°C	8.4°C	14.2°C
Balneario Marisol	10.6°C	8.3°C	14.2°C
San Cayetano	10.7°C	8.9°C	14.2°C
Balneario Sauce Grande	10.8°C	8°C	14.2°C
Balneario Los Angeles	10.8°C	9.2°C	14.3°C
Necochea	10.8°C	9.2°C	14.4°C
Quequen	10.8°C	9.2°C	14.4°C
Costa Bonita	10.8°C	9.2°C	14.4°C
Arenas Verdes	10.8°C	9.2°C	14.4°C
Arroyo Parejas	11°C	7.9°C	14.6°C

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Our report for Tres Arroyos 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