Seljordsvatnet — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Seljordsvatnet, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Seljordsvatnet today is 18.2°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 |
|---|---|---|---|
| AUG 4 | 18.6°C | 22.0°C | |
| AUG 5 | 18.6°C | 22.0°C | |
| AUG 6 | 18.2°C | 22.0°C | |
| AUG 7 | 18.2°C | 22.0°C | |
| AUG 8 | 18.2°C | 22.0°C | |
| AUG 9 | 18.2°C | 22.0°C | |
| AUG 10 | 18.2°C | 22.0°C | |
| AUG 11 | 18.2°C | 22.0°C | |
| AUG 12 | 22.0°C | 18.4°C | |
| AUG 13 | 22.0°C | 18.6°C | |
| AUG 14 | 22.0°C | 18.8°C | |
| AUG 15 | 22.0°C | 19.0°C | |
| AUG 16 | 22.0°C | 19.2°C | |
| AUG 17 | 22.0°C | 19.3°C | |
| AUG 18 | 22.0°C | 19.5°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 | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 4°C | 7°C |
| April | 2°C | 7°C | 11°C |
| May | 7°C | 12°C | 18°C |
| June | 11°C | 18°C | 24°C |
| July | 17°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 12°C | 18°C | 23°C |
| October | 7°C | 11°C | 14°C |
| November | 3°C | 7°C | 10°C |
| December | 0°C | 4°C | 7°C |
Seljordsvatnet: Water Temperature by Location
Seljordsvatnet: Weather Forecast
August 11
August 12
August 13
August 14
August 15
Location & Local Information
Seljordsvatnet is a freshwater lake in Telemark County, Norway (Seljordsvatnet) with water temperatures that follow the local seasonal cycle. In winter the surface typically sits around 0–2 °C (32–36 °F) and may freeze over; spring brings a gradual rise to roughly 2–10 °C (36–50 °F) as the ice melts and the water mixes. Summer is when the lake is warmest, with surface temperatures commonly in the range 12–22 °C (54–72 °F) on sunny, calm days and occasionally a few degrees higher during heat spells. In autumn the temperature falls back to about 6–12 °C (43–54 °F) as cooling and increased wind-driven mixing set in.
Swimming in Seljordsvatnet is generally allowed, reflecting Norway’s broad public access to nature, and many people swim there in the warmer months when surface temperatures are comfortable. Water quality is usually suitable for recreational use, but conditions can vary with weather, runoff and local activities, so it is sensible to heed any local advisories. Cold water and sudden weather changes present risks outside summer; ice swimming is a practiced activity in Norway but should only be attempted where the ice is proven safe and with appropriate precautions. As always, swimmers should assess conditions, use flotation if needed, and avoid solitary swims in cold seasons.