Lenne River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Lenne River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Lenne River today is 14.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| SEP 13 | 14.8°C | 16.0°C | |
| SEP 14 | 15.5°C | 16.0°C | |
| SEP 15 | 15.3°C | 16.0°C | |
| SEP 16 | 14.8°C | 16.0°C | |
| SEP 17 | 16.5°C | 16.0°C | |
| SEP 18 | 15.0°C | 16.0°C | |
| SEP 19 | 14.7°C | 16.0°C | |
| SEP 20 | 14.6°C | 16.0°C | |
| SEP 21 | 16.0°C | 15.0°C | |
| SEP 22 | 16.0°C | 15.0°C | |
| SEP 23 | 16.0°C | 15.1°C | |
| SEP 24 | 16.0°C | 15.1°C | |
| SEP 25 | 16.0°C | 15.2°C | |
| SEP 26 | 16.0°C | 15.2°C | |
| SEP 27 | 16.0°C | 15.3°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 | 3°C | 6°C | 8°C |
| February | 2°C | 5°C | 8°C |
| March | 5°C | 8°C | 10°C |
| April | 6°C | 10°C | 14°C |
| May | 10°C | 13°C | 17°C |
| June | 11°C | 17°C | 23°C |
| July | 11°C | 16°C | 22°C |
| August | 11°C | 17°C | 23°C |
| September | 13°C | 16°C | 21°C |
| October | 9°C | 13°C | 16°C |
| November | 4°C | 8°C | 11°C |
| December | 2°C | 6°C | 9°C |
Lenne River: Water Temperature by Location
Lenne River: Weather Forecast
September 21
September 22
September 23
September 24
Location & Local Information
Source:
• location Sauerland
• elevation 819 m (2,687 ft)
Mouth:
• location Ruhr
• coordinates 51°24′54″N 7°29′31″E
Length 129.0 km (80.2 mi)
The Lenne River is a tributary of the Ruhr River, located in North Rhine-Westphalia, Germany, and spans a length of about 128 kilometers. Originating in the Sauerland region, the river flows through picturesque landscapes and towns such as Altena and Iserlohn before joining the Ruhr. The Lenne's water temperature typically ranges from 4-10°C (39-50°F) during winter months and rises to 15-20°C (59-68°F) in summer, depending on weather conditions and seasonal variations.
Swimming in the Lenne is generally not widely practiced due to safety concerns such as variable currents, uneven depths, and water quality issues. While parts of the river may appear inviting, the presence of infrastructure and occasional pollution from nearby urban areas make it less suitable for recreational swimming. However, the Lenne's scenic surroundings are a popular destination for outdoor activities like hiking, kayaking, and cycling. Nearby lakes and swimming pools offer safer alternatives for those looking to enjoy water activities.