Frederikssund — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Frederikssund, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Frederikssund today is 9.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing can be used. 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 |
|---|---|---|---|
| OCT 15 | 10.6°C | 11.0°C | |
| OCT 16 | 10.4°C | 11.0°C | |
| OCT 17 | 10.2°C | 11.0°C | |
| OCT 18 | 10.9°C | 11.0°C | |
| OCT 19 | 10.9°C | 11.0°C | |
| OCT 20 | 10.5°C | 11.0°C | |
| OCT 21 | 10.2°C | 11.0°C | |
| OCT 22 | 9.4°C | 11.0°C | |
| OCT 23 | 11.0°C | 9.5°C | |
| OCT 24 | 11.0°C | 9.6°C | |
| OCT 25 | 11.0°C | 9.6°C | |
| OCT 26 | 11.0°C | 9.7°C | |
| OCT 27 | 11.0°C | 9.8°C | |
| OCT 28 | 11.0°C | 9.9°C | |
| OCT 29 | 11.0°C | 10.0°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 | 4°C | 7°C |
| February | 0°C | 3°C | 6°C |
| March | 2°C | 6°C | 9°C |
| April | 5°C | 9°C | 12°C |
| May | 9°C | 14°C | 20°C |
| June | 14°C | 20°C | 25°C |
| July | 14°C | 20°C | 25°C |
| August | 14°C | 20°C | 25°C |
| September | 11°C | 17°C | 22°C |
| October | 7°C | 11°C | 14°C |
| November | 5°C | 9°C | 12°C |
| December | 1°C | 5°C | 8°C |
Frederikssund: Weather Forecast
October 23
October 24
October 25
October 26
October 27
Location & Local Information
Frederikssund (Danish: Frederikssund) lies on the shores of Roskilde Fjord in the Capital Region of Denmark, and the local waters are influenced by shallow, brackish conditions that make them respond quickly to air temperatures. Seasonal surface temperatures in these fjord and lake-like basins typically range from close to freezing in the depths of winter, about 0–4 °C (32–39 °F), to spring values of roughly 5–12 °C (41–54 °F). In summer the water commonly warms to around 17–22 °C (63–72 °F), and during heat spells can rise occasionally to 23–24 °C (73–75 °F). Autumn cooling generally brings temperatures down to 8–15 °C (46–59 °F) before winter sets in again.
Swimming is permitted in Frederikssund at public beaches and designated bathing sites around the fjord, owing to Denmark’s public access rights and municipal management of bathing areas. The municipality monitors water quality during the bathing season and some beaches are staffed with lifeguards at peak times, but conditions vary with weather, currents and algae blooms, so local advisories should be noted. Cold-water safety is important outside high summer temperatures, and swimmers should be aware of hypothermia risk, variable visibility and boat traffic in harbor-adjacent areas.