Heiliger See — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Heiliger See, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Heiliger See 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 |
|---|---|---|---|
| SEP 15 | 19.0°C | 19.5°C | |
| SEP 16 | 19.0°C | 19.5°C | |
| SEP 17 | 19.4°C | 19.5°C | |
| SEP 18 | 19.2°C | 19.5°C | |
| SEP 19 | 19.1°C | 19.5°C | |
| SEP 20 | 18.9°C | 19.5°C | |
| SEP 21 | 19.0°C | 19.5°C | |
| SEP 22 | 19.1°C | 19.5°C | |
| SEP 23 | 19.5°C | 18.6°C | |
| SEP 24 | 19.5°C | 18.6°C | |
| SEP 25 | 19.5°C | 18.7°C | |
| SEP 26 | 19.5°C | 18.7°C | |
| SEP 27 | 19.5°C | 18.8°C | |
| SEP 28 | 19.5°C | 18.8°C | |
| SEP 29 | 19.5°C | 18.9°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 | 4°C | 6°C |
| February | 1°C | 4°C | 7°C |
| March | 3°C | 6°C | 9°C |
| April | 8°C | 11°C | 14°C |
| May | 13°C | 17°C | 22°C |
| June | 18°C | 22°C | 26°C |
| July | 19°C | 22°C | 27°C |
| August | 19°C | 22°C | 27°C |
| September | 15°C | 20°C | 24°C |
| October | 8°C | 12°C | 15°C |
| November | 3°C | 7°C | 11°C |
| December | 2°C | 4°C | 7°C |
Heiliger See: Water Temperature by Location
Heiliger See: Weather Forecast
September 23
September 24
September 25
September 26
September 27
Location & Local Information
Heiliger See, located in Potsdam, Germany, is a scenic lake surrounded by historical landmarks and lush greenery. Its water temperature varies throughout the year, typically warming to 18°C to 24°C during the summer months, making it suitable for outdoor activities. While the lake is an inviting spot for relaxation, swimming is permitted only in designated areas due to its proximity to cultural and historical sites like the Cecilienhof Palace.
Swimming in Heiliger See is a popular activity, especially in the warmer months. The lake's clear waters and serene environment attract both locals and tourists seeking a refreshing dip. However, as the area is part of the UNESCO World Heritage-listed Potsdam cultural landscape, regulations ensure that recreational use does not disturb the natural and cultural integrity of the surroundings.