Roskilde Fjord — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Roskilde Fjord, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Roskilde Fjord today is 19.4°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 |
|---|---|---|---|
| JUN 25 | 17.7°C | 20.0°C | |
| JUN 26 | 18.3°C | 20.0°C | |
| JUN 27 | 18.3°C | 20.0°C | |
| JUN 28 | 18.9°C | 20.0°C | |
| JUN 29 | 18.9°C | 20.0°C | |
| JUN 30 | 19.4°C | 20.0°C | |
| JUL 1 | 19.4°C | 20.0°C | |
| JUL 2 | 19.4°C | 20.0°C | |
| JUL 3 | 20.0°C | 19.4°C | |
| JUL 4 | 20.0°C | 19.5°C | |
| JUL 5 | 20.0°C | 19.5°C | |
| JUL 6 | 20.0°C | 19.5°C | |
| JUL 7 | 20.0°C | 19.6°C | |
| JUL 8 | 20.0°C | 19.6°C | |
| JUL 9 | 20.0°C | 19.6°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 |
Roskilde Fjord: Water Temperature by Location
Roskilde Fjord: Weather Forecast
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July 7
Location & Local Information
Roskilde Fjord, located on the island of Zealand in Denmark, typically experiences cool to mild water temperatures that vary considerably through the year. In winter the surface often ranges from about 0–4 °C (32–39 °F), while spring sees gradual warming to roughly 4–12 °C (39–54 °F). Summer surface temperatures in the sheltered, shallow parts of the fjord commonly reach 15–22 °C (59–72 °F) on warm days, and in autumn the water usually cools back to around 8–14 °C (46–57 °F). Because the fjord is relatively shallow and protected from open-sea conditions, temperatures can rise faster in summer and drop quickly in colder months, with some local variation depending on depth, tidal exchange and weather.
Swimming in Roskilde Fjord is generally allowed and popular at designated beaches and marina areas, reflecting Denmark’s broad public access to the shoreline and local provision of bathing sites. Municipal authorities monitor water quality and post warnings or temporary closures when issues arise, for example after heavy rainfall, sewage overflow or visible cyanobacterial blooms in calm, warm conditions. Swimmers should therefore use marked bathing places, heed local signage, and be aware of boats and changing conditions even when water temperatures are comfortable.