Isère River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Isère River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Isère River today is 19.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature 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.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 23 | 18.9°C | 17.0°C | |
| JUN 24 | 19.0°C | 17.0°C | |
| JUN 25 | 19.1°C | 17.0°C | |
| JUN 26 | 19.3°C | 17.0°C | |
| JUN 27 | 19.3°C | 17.0°C | |
| JUN 28 | 19.5°C | 17.0°C | |
| JUN 29 | 19.4°C | 17.0°C | |
| JUN 30 | 19.8°C | 17.0°C | |
| JUL 1 | 18.0°C | 19.7°C | |
| JUL 2 | 18.0°C | 19.6°C | |
| JUL 3 | 18.0°C | 19.5°C | |
| JUL 4 | 18.0°C | 19.4°C | |
| JUL 5 | 18.0°C | 19.4°C | |
| JUL 6 | 18.0°C | 19.3°C | |
| JUL 7 | 18.0°C | 19.2°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 4°C | 8°C | 10°C |
| February | 3°C | 7°C | 9°C |
| March | 6°C | 9°C | 12°C |
| April | 8°C | 11°C | 14°C |
| May | 9°C | 13°C | 18°C |
| June | 12°C | 17°C | 21°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 11°C | 16°C | 20°C |
| October | 9°C | 13°C | 16°C |
| November | 6°C | 9°C | 12°C |
| December | 4°C | 8°C | 10°C |
Isère River: Water Temperature by Location
Isère River: Weather Forecast
July 1
July 2
July 3
July 4
July 5
Location & Local Information
Source:
• location Sources de l'Isère Glacier, Grande Aiguille Rousse, Graian Alps
• coordinates 45°26′45″N 7°5′47″E
• elevation ±2,900 m (9,500 ft)
Mouth:
• location Rhône
• coordinates 44°58′56″N 4°51′8″E
• elevation ±110 m (360 ft)
Length 286 km (178 mi)
The Isère River, flowing through the scenic French Alps, is known for its cold, fast-moving waters, particularly at higher altitudes and in early summer when snowmelt increases its flow. In the summer months, the river's temperature varies greatly depending on the altitude and flow conditions. Generally, it can range from around 10°C to 18°C (50°F to 64°F) in accessible, lower-altitude areas, but remains colder in the mountainous upper reaches, making swimming somewhat challenging for those sensitive to cold. In spring and autumn, the water temperature can be even lower, often below 12°C (54°F), which discourages swimming for most.
Due to its swift current and cool temperatures, the Isère is not commonly recommended for swimming. However, there are spots in the lower reaches, near towns like Albertville and Grenoble, where calmer sections or pools may allow for wading or a quick dip. These areas are more popular for water sports like kayaking and rafting, which take advantage of the river’s rapids and dynamic flow. For those looking to enjoy the river’s refreshing waters, sticking to calmer pools or side channels near the banks is advisable. Always use caution, as the river can have sudden current changes due to upstream conditions, especially after rain or snowmelt.