Water temperature in Arzon in July

Is it warm enough to swim in Arzon in July? Average water temperature in Arzon in July is 18.4°C and therefore is not suitable for comfortable swimming. The warmest sea in Arzon in July is 22.7°C, and the coldest is 15.8°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Arzon

Changes water temperature in Arzon in July 2025, 2024

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

Sea temperature

Tides

Weather forecast

You can choose any other years:

Day	2025	2024	Min	Max
1 July	20.5°C	17.7°C	16.2°C	20.5°C
2 July	19.8°C	17.8°C	16.2°C	19.8°C
3 July	19.4°C	16.7°C	15.8°C	19.6°C
4 July	19.5°C	17°C	16°C	19.9°C
5 July	19.2°C	17.4°C	16.5°C	19.9°C
6 July	18.8°C	17.3°C	16.5°C	20°C
7 July	18.6°C	17.1°C	16.6°C	20.3°C
8 July	17.9°C	17°C	16.7°C	20.5°C
9 July	17.8°C	17.5°C	16.7°C	20.6°C
10 July	18.3°C	18°C	16.5°C	20.3°C
11 July	19.2°C	17.4°C	16.6°C	20.5°C
12 July	19.7°C	17.8°C	16.7°C	20.3°C
13 July	19.2°C	17.6°C	17°C	20.5°C
14 July	19.4°C	17.7°C	17.3°C	20.5°C
15 July	19.2°C	17.5°C	17.3°C	20.1°C

Day	2025	2024	Min	Max
16 July	19.1°C	18.1°C	17.2°C	20.3°C
17 July	18.7°C	18.1°C	17.1°C	20.6°C
18 July	18.7°C	18.6°C	16.9°C	21.1°C
19 July	19.3°C	18.6°C	16.6°C	21.1°C
20 July	18.8°C	18.1°C	16.6°C	21.9°C
21 July	18.8°C	18.6°C	16.5°C	22.5°C
22 July	18.8°C	18.4°C	16.3°C	22.7°C
23 July	18.7°C	18.4°C	16.3°C	21.7°C
24 July	18.7°C	18.3°C	16.3°C	21.3°C
25 July	19.1°C	18.2°C	16.4°C	21.3°C
26 July	18.5°C	18.2°C	16.5°C	20.5°C
27 July	18.3°C	18.1°C	16.6°C	20°C
28 July	18.2°C	19.1°C	17.1°C	19.7°C
29 July	18.1°C	20°C	17.3°C	20°C
30 July	18.2°C	20.4°C	17.7°C	20.4°C
31 July	18°C	20.9°C	17.5°C	20.9°C

Average water temperature in Arzon in July over a decade

2016	2017	2018	2019	2020
18.3°C	18.2°C	19.7°C	19.9°C	18.8°C

2021	2022	2023	2024	2025
19.3°C	19.4°C	18.2°C	18.1°C	18.8°C

Arzon sea state in July

Chart comparing the height of waves in Arzon in July 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.

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

	Avr	Min	Max
Locmariaquer	18.3°C	15.8°C	22.4°C
Baden	18.5°C	15.9°C	22.6°C
Larmor Baden	18.5°C	15.9°C	22.6°C
Port Navalo	18.4°C	15.8°C	22.4°C
Le Bono	18.3°C	15.8°C	22.4°C
Saint Gildas De Rhuys	18.5°C	15.8°C	22.6°C
Ile-aux-Moines	18.6°C	16°C	22.6°C
Saint Philibert	18.2°C	15.7°C	22.1°C
Île d'Arz	18.7°C	16°C	22.5°C
Gulf of Morbihan	18.7°C	16°C	22.5°C

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Our report for Arzon 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