Lake Søndersø — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Søndersø, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Søndersø today is 20.9°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 | 18.8°C | 21.0°C | |
| JUN 24 | 18.8°C | 21.0°C | |
| JUN 25 | 18.9°C | 21.0°C | |
| JUN 26 | 19.9°C | 21.0°C | |
| JUN 27 | 19.9°C | 21.0°C | |
| JUN 28 | 20.5°C | 21.0°C | |
| JUN 29 | 20.1°C | 21.0°C | |
| JUN 30 | 20.9°C | 21.0°C | |
| JUL 1 | 22.0°C | 21.0°C | |
| JUL 2 | 22.0°C | 21.0°C | |
| JUL 3 | 22.0°C | 21.1°C | |
| JUL 4 | 22.0°C | 21.1°C | |
| JUL 5 | 22.0°C | 21.2°C | |
| JUL 6 | 22.0°C | 21.2°C | |
| JUL 7 | 22.0°C | 21.3°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 | 1°C | 5°C | 8°C |
| February | 1°C | 5°C | 8°C |
| March | 2°C | 6°C | 10°C |
| April | 6°C | 10°C | 13°C |
| May | 10°C | 15°C | 21°C |
| June | 16°C | 21°C | 26°C |
| July | 17°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 13°C | 19°C | 24°C |
| October | 9°C | 13°C | 17°C |
| November | 5°C | 9°C | 12°C |
| December | 0°C | 4°C | 7°C |
Lake Søndersø: Water Temperature by Location
Lake Søndersø: Weather Forecast
July 1
July 2
July 3
July 4
July 5
Location & Local Information
Lake Søndersø in Region Zealand typically follows the seasonal pattern of Danish lowland lakes. During winter the surface temperature often falls close to freezing, roughly 0–4 °C (32–39 °F), and ice can form in cold spells. Spring sees a gradual rise, commonly between about 4–13 °C (39–55 °F) as the lake stratifies. In summer the water is warmest, with typical surface temperatures in the range of 17–24 °C (63–75 °F) depending on weather and wind; occasional heatwaves can push the upper values slightly higher. Autumn brings cooling waters around 8–15 °C (46–59 °F) as the lake mixes again.
Swimming at Søndersø is generally possible and is commonly practiced in the warmer months from public shores and designated bathing spots, subject to local access rights. Municipal authorities in Denmark monitor bathing water quality, so swimming is advisable when there are no posted advisories; summer algal blooms or short-term pollution can lead to temporary warnings. Seasonal cold-water risks—such as cold shock in early or late season and thin ice in winter—mean swimmers should use caution and respect signage and local regulations. In short, summer offers the most comfortable conditions for swimming, while other seasons require greater care.