World sea water temperatures

Water temperature in Rennes in August

Home > France > Brittany > Rennes

Is it warm enough to swim in Rennes in August? Average water temperature in Rennes in August is 19.8°C and therefore is not suitable for comfortable swimming. The warmest water in Rennes in August is 25°C, and the coldest is 16°C. To find out the water temperature today and in the coming days, go to Current water temperature in Rennes

Changes water temperature in Rennes in August 2025, 2024

To get an accurate forecast for the water temperature in Rennes for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
1 August19°C 
2 August19°C21°C
3 August19°C20°C
4 August19°C 
5 August19°C 
6 August19°C19°C
7 August20°C19°C
8 August20°C20°C
9 August21°C20°C
10 August21°C20°C
11 August21°C21°C
12 August21°C21°C
13 August21°C 
14 August21°C21°C
15 August21°C21°C
Day 2025 2024
16 August21°C20°C
17 August21°C19°C
18 August21°C19°C
19 August21°C18°C
20 August21°C18°C
21 August20°C18°C
22 August19°C18°C
23 August20°C18°C
24 August19°C18°C
25 August19°C18°C
26 August19°C19°C
27 August21°C19°C
28 August19°C18°C
29 August20°C18°C
30 August18°C19°C
31 August17°C19°C

Rennes water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in August?

Want to know where the water temperature in August is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Brittany photo gallery

  • Brittany
  • Brittany
  • Brittany
  • Brittany

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

Vote for Brittany best beach

Current rating: (0 votes cast)

If you know this place (Rennes) and want to leave your comment or rate it, then fill out the following form.

Your rating for this place:

Does this place have a "Blue Flag" award [1], are there rip currents and what type of beach is it, sand or pebble:

Is the beach a dog-friendly place, child friendly or a nudist beach?


Your comments for this place (water quality, crowds, facilities, activities, lifeguards, service etc.):



[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

:


Get widget or API for your website

Our report for Rennes 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.

Contact us: admin@seatemperature.info
privacy policy