Ill River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Ill River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Ill River today is 20.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 | 18.0°C | |
| JUN 24 | 19.0°C | 18.0°C | |
| JUN 25 | 19.4°C | 18.0°C | |
| JUN 26 | 19.3°C | 18.0°C | |
| JUN 27 | 19.3°C | 18.0°C | |
| JUN 28 | 19.6°C | 18.0°C | |
| JUN 29 | 19.9°C | 18.0°C | |
| JUN 30 | 20.2°C | 18.0°C | |
| JUL 1 | 20.0°C | 20.2°C | |
| JUL 2 | 20.0°C | 20.2°C | |
| JUL 3 | 20.0°C | 20.2°C | |
| JUL 4 | 20.0°C | 20.2°C | |
| JUL 5 | 20.0°C | 20.2°C | |
| JUL 6 | 20.0°C | 20.1°C | |
| JUL 7 | 20.0°C | 20.1°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 | 2°C | 6°C | 9°C |
| February | 2°C | 6°C | 9°C |
| March | 5°C | 9°C | 11°C |
| April | 7°C | 11°C | 14°C |
| May | 9°C | 14°C | 18°C |
| June | 13°C | 18°C | 22°C |
| July | 16°C | 20°C | 25°C |
| August | 13°C | 18°C | 22°C |
| September | 11°C | 16°C | 20°C |
| October | 8°C | 11°C | 14°C |
| November | 5°C | 9°C | 11°C |
| December | 3°C | 7°C | 9°C |
Ill River: Water Temperature by Location
Ill River: Weather Forecast
July 1
July 2
July 3
July 4
July 5
Location & Local Information
Source:
• location Jura mountains
• elevation 570 m (1,870 ft)
Mouth:
• location Rhine
• coordinates 48°42′1″N 7°55′52″E
Length 217 km (135 mi)
Basin size 4,760 km2 (1,840 sq mi)
The Ill River, flowing through the Alsace region in northeastern France, is a picturesque waterway that passes by scenic towns like Strasbourg. Its water temperatures vary significantly with the seasons, typically averaging between 8-15°C (46-59°F) from autumn to early spring, and reaching a warmer 18-22°C (64-72°F) during the height of summer. These seasonal variations make the Ill River an appealing, though limited, spot for swimming primarily in the warmer months. However, as a river that passes through urban and agricultural areas, the Ill is subject to varying water quality levels, which can impact its suitability for recreational activities, including swimming.
While swimming is possible in certain areas, many locals and visitors prefer nearby designated swimming spots, as portions of the river may not always meet optimal standards for water quality. Some areas along the Ill also have currents or access restrictions, so it is recommended to swim only in approved zones or to explore nearby recreational facilities that offer safer, monitored swimming environments. In Strasbourg, for example, locals often enjoy the banks of the Ill for picnicking, kayaking, or boat tours, while dedicated swimming spots are available nearby in supervised public lakes.