Isar River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Isar River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Isar River today is 18.5°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 |
|---|---|---|---|
| AUG 3 | 19.8°C | 15.3°C | |
| AUG 4 | 19.4°C | 15.3°C | |
| AUG 5 | 19.4°C | 15.3°C | |
| AUG 6 | 19.2°C | 15.3°C | |
| AUG 7 | 19.1°C | 15.3°C | |
| AUG 8 | 18.8°C | 15.3°C | |
| AUG 9 | 18.8°C | 15.3°C | |
| AUG 10 | 18.5°C | 15.3°C | |
| AUG 11 | 15.3°C | 18.3°C | |
| AUG 12 | 15.3°C | 18.2°C | |
| AUG 13 | 15.3°C | 18.0°C | |
| AUG 14 | 15.3°C | 17.9°C | |
| AUG 15 | 15.3°C | 17.7°C | |
| AUG 16 | 15.3°C | 17.5°C | |
| AUG 17 | 15.3°C | 17.4°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 | 0°C | 3°C | 5°C |
| February | 0°C | 3°C | 6°C |
| March | 2°C | 5°C | 8°C |
| April | 3°C | 8°C | 12°C |
| May | 5°C | 10°C | 15°C |
| June | 6°C | 12°C | 18°C |
| July | 10°C | 14°C | 19°C |
| August | 11°C | 15°C | 20°C |
| September | 6°C | 9°C | 14°C |
| October | 4°C | 7°C | 10°C |
| November | 2°C | 6°C | 9°C |
| December | 1°C | 3°C | 5°C |
Isar River: Water Temperature by Location
Isar River: Weather Forecast
August 11
August 12
August 13
August 14
August 15
Location & Local Information
Source:
• location Eiskarlspitze, Alps, Austria
• coordinates 47°22′29″N 11°24′43″E
• elevation 1,160 m (3,810 ft)
Mouth:
• location Danube
• coordinates 48°48′11″N 12°58′35″E
Length 291.5 km (181.1 mi)
The Isar River flows through both Austria and Germany, originating in the Tyrol Alps of Austria and winding through the Bavarian countryside in Germany. Its source in the mountains results in cold, clear water, especially in its upper stretches. During the summer months, the water temperature of the Isar typically ranges from 10°C to 18°C (50°F to 64°F), which can feel refreshing but is generally too cold for prolonged swimming, particularly in the upper sections. The water temperature rises slightly in the lower sections as it flows through more settled areas, especially in Munich, but even in these parts, the water remains relatively cool compared to many other rivers or lakes.
Swimming in the Isar is popular, particularly in the warmer months. The river is known for its beautiful scenery and many accessible spots, especially near Munich, where locals and tourists enjoy cooling off during the summer. While the upper Isar is faster-flowing and colder, there are calmer sections lower down where swimming is more common. The river offers both natural beaches and designated swimming areas, where the water conditions are considered safe. However, swimmers should still be cautious of strong currents, especially after heavy rains, which can make the water flow faster and stronger. For safety, it is best to swim in designated areas where local authorities ensure the water conditions are suitable for swimming.