Skien watershed River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Skien watershed River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Skien watershed River today is 4.6°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters. 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 |
|---|---|---|---|
| NOV 3 | 6.7°C | 6.0°C | |
| NOV 4 | 6.1°C | 6.0°C | |
| NOV 5 | 5.9°C | 6.0°C | |
| NOV 6 | 5.0°C | 6.0°C | |
| NOV 7 | 5.3°C | 6.0°C | |
| NOV 8 | 5.3°C | 6.0°C | |
| NOV 9 | 5.3°C | 6.0°C | |
| NOV 10 | 4.0°C | 6.0°C | |
| NOV 11 | 6.0°C | 4.7°C | |
| NOV 12 | 6.0°C | 4.7°C | |
| NOV 13 | 6.0°C | 4.8°C | |
| NOV 14 | 6.0°C | 4.9°C | |
| NOV 15 | 6.0°C | 5.0°C | |
| NOV 16 | 6.0°C | 5.0°C | |
| NOV 17 | 6.0°C | 5.1°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 | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 6°C |
| April | 2°C | 6°C | 9°C |
| May | 6°C | 10°C | 15°C |
| June | 10°C | 16°C | 20°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 10°C | 15°C | 19°C |
| October | 6°C | 9°C | 12°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 3°C | 6°C |
Skien watershed River: Water Temperature by Location
Skien watershed River: Weather Forecast
November 11
November 12
November 13
November 14
November 15
November 16
Location & Local Information
The Skiensvassdraget watershed in Telemark County spans a mix of lakes, slow river stretches and faster mountain-fed tributaries, and water temperatures reflect that variety. Seasonal ranges typically run from near freezing in winter—around 0–4 °C (32–39 °F)—to cool conditions through spring at roughly 2–8 °C (36–46 °F) as snowmelt dominates. In summer the warmest, sheltered lakes and slow reaches commonly reach about 14–22 °C (57–72 °F), with occasional heat-wave highs approaching 25 °C (77 °F) in shallow bays. Autumn brings a steady cooling to roughly 6–12 °C (43–54 °F). Deep, regulated reservoirs and water released below dams can be markedly colder year-round, and fast-flowing tributaries keep significantly lower temperatures than the main lowland lakes.
Swimming in the Skiensvassdraget is generally permitted under Norway’s public access traditions, but practical safety and water-quality considerations determine whether it’s advisable at a given spot. Summer months offer the most comfortable conditions for bathing, while spring and early autumn carry higher hypothermia risk. Strong currents, submerged structures and sudden cold outflows from hydroelectric releases can make some places hazardous even in warm weather, and local authorities sometimes issue bathing advisories. Visitors should choose sheltered, monitored sites when possible and remain aware of local conditions.