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Rennes

Water Temperature in Rennes in Vilaine River: Current and Forecast

On this page, you will find comprehensive information about the water temperature in Rennes in Vilaine River, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Water Temperature in Rennes

19.0°C

TODAY

19.0°C

YESTERDAY

17.5°C

A WEEK AGO

As of today, the minimum water temperature in Rennes ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Vilaine River in Rennes Over the Last 30 Days

Today the water temperature in Rennes is lower than the same day in previous years. The water temperature range here in June is from 16°C to 23°C. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

The forecasted water temperature values for Rennes are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Table of Daily Water Temperature Data

DateCurrentAverageForecast
Jun 1917.5°C19.3°C
Jun 2017.5°C19.3°C
Jun 2117.4°C19.3°C
Jun 2217.6°C19.3°C
Jun 2317.7°C19.3°C
Jun 2417.9°C19.3°C
Jun 2519.0°C19.3°C
Jun 2619.0°C19.3°C
Jun 2719.3°C19.0°C
Jun 2819.3°C19.0°C
Jun 2919.3°C19.0°C
Jun 3019.3°C19.0°C
Jul 120.7°C19.1°C
Jul 220.7°C19.2°C
Jul 320.7°C19.3°C
Jul 420.7°C19.4°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Rennes by Month

January

MinimumAverageMaximum
3°C5°C7°C

February

MinimumAverageMaximum
3°C6°C9°C

March

MinimumAverageMaximum
5°C8°C11°C

April

MinimumAverageMaximum
10°C13.2°C16°C

May

MinimumAverageMaximum
13°C16.3°C19°C

June

MinimumAverageMaximum
16°C19.3°C23°C

July

MinimumAverageMaximum
18°C20.7°C26°C

August

MinimumAverageMaximum
19°C22°C25°C

September

MinimumAverageMaximum
14°C17.4°C22°C

October

MinimumAverageMaximum
9°C12°C15°C

November

MinimumAverageMaximum
5°C8°C11°C

December

MinimumAverageMaximum
3°C5°C7°C

Monthly Water Temperature Histogram for Vilaine River in Rennes

Rennes Weather

JUNE 26

16°C / 24°C
slight rain showers

rain: 48% | wind: 24 km/h

JUNE 27

14°C / 28°C
overcast

rain: 0% | wind: 17 km/h

JUNE 28

15°C / 29°C
partly cloudy

rain: 0% | wind: 10 km/h

JUNE 29

17°C / 31°C
mainly clear

rain: 0% | wind: 16 km/h

JUNE 30

16°C / 32°C
partly cloudy

rain: 0% | wind: 21 km/h

Water Temperature in Rennes: General Trends and Swimming Opportunities

Rennes, the capital of Brittany in France, is situated along the Vilaine River. The Vilaine's water temperature in Rennes ranges from around 5–10°C (41–50°F) during the winter months to 15–20°C (59–68°F) in summer. While these temperatures can be refreshing in warmer seasons, the Vilaine River is generally not used for swimming within Rennes due to safety and water quality concerns.

Swimming in the Vilaine within Rennes is not encouraged, primarily due to water pollution from urban runoff and limited monitoring. However, the river and its surrounding pathways are popular for walking, cycling, and kayaking. For those looking to swim, there are several managed pools and recreational lakes nearby, such as Étang d’Apigné, where water quality and safety measures are maintained, offering a safer and more enjoyable experience.

Geographical Location of Rennes

Frequently Asked Questions About Rennes and its Water Temperatures

What is the current water temperature in Rennes?

The water temperature today in Rennes is 66°F (19.0°C).

What is the water temperature in Rennes during the summer months?

The average water temperature in Rennes during the summer months is typically between 67°F to 72°F (19°C to 22°C), and it can reach up to 79°F (26°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Rennes in May?

The average water temperature in Rennes in May ranges from 55°F to 66°F (13°C to 19°C).

What is the water temperature in Rennes in September?

The average water temperature in Rennes in September is typically between 57°F to 72°F (14°C to 22°C).

Is it possible to swim in the Vilaine River in Rennes, and what are the available options for doing so?

Yes, it's possible to swim in the Vilaine River in Rennes. You can swim freely in designated areas, or participate in organized events like the annual Baignade en Vilaine.