Fyresvatnet — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Fyresvatnet, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Fyresvatnet today is 11.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit 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 |
|---|---|---|---|
| SEP 14 | 12.0°C | 17.0°C | |
| SEP 15 | 12.3°C | 17.0°C | |
| SEP 16 | 12.2°C | 17.0°C | |
| SEP 17 | 12.2°C | 17.0°C | |
| SEP 18 | 12.0°C | 17.0°C | |
| SEP 19 | 11.6°C | 17.0°C | |
| SEP 20 | 11.0°C | 17.0°C | |
| SEP 21 | 11.3°C | 17.0°C | |
| SEP 22 | 17.0°C | 11.6°C | |
| SEP 23 | 17.0°C | 11.9°C | |
| SEP 24 | 17.0°C | 12.2°C | |
| SEP 25 | 17.0°C | 12.4°C | |
| SEP 26 | 17.0°C | 12.7°C | |
| SEP 27 | 17.0°C | 13.0°C | |
| SEP 28 | 17.0°C | 13.3°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 | 0°C | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 6°C |
| April | 1°C | 6°C | 10°C |
| May | 6°C | 11°C | 17°C |
| June | 10°C | 17°C | 23°C |
| July | 15°C | 21°C | 26°C |
| August | 15°C | 21°C | 26°C |
| September | 11°C | 17°C | 22°C |
| October | 6°C | 10°C | 13°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 3°C | 6°C |
Fyresvatnet: Water Temperature by Location
Fyresvatnet: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Fyresvatnet (Norwegian: Fyresvatnet) in Telemark County is a large, relatively deep freshwater lake whose surface temperatures vary noticeably through the year. In spring (April–May) surface water typically warms from around 2–8 °C (36–46 °F) as snowmelt and runoff dominate. Peak summer temperatures (June–August) are commonly in the 12–18 °C range (54–64 °F) near the shore on warm, sunny days, though deeper water remains colder. During autumn (September–October) the lake cools again to roughly 8–12 °C (46–54 °F), and in winter surface temperatures approach freezing, about 0–4 °C (32–39 °F), with ice cover possible depending on the year and local conditions. Local weather, wind, and depth create substantial variation from these averages.
Swimming in Fyresvatnet is allowed and practiced, especially in summer when near-shore temperatures are most comfortable; public access and Norway’s outdoor access rights mean many spots are open for recreation. Because the water stays relatively cool and deeper layers remain cold even in summer, swimmers should be conscious of cold-water shock and limited lifeguard presence in remote areas. In winter, swimming is generally unsafe except for experienced ice swimmers with proper safety measures. Water quality is typically good, but conditions can change, so take usual precautions and check local guidance before entering.