Trängslet Dam — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Trängslet Dam, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Trängslet Dam today is 9.6°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 |
|---|---|---|---|
| SEP 14 | 10.4°C | 12.0°C | |
| SEP 15 | 11.0°C | 12.0°C | |
| SEP 16 | 10.8°C | 12.0°C | |
| SEP 17 | 10.4°C | 12.0°C | |
| SEP 18 | 10.2°C | 12.0°C | |
| SEP 19 | 10.1°C | 12.0°C | |
| SEP 20 | 9.9°C | 12.0°C | |
| SEP 22 | 12.0°C | 9.7°C | |
| SEP 23 | 12.0°C | 9.8°C | |
| SEP 24 | 12.0°C | 10.0°C | |
| SEP 25 | 12.0°C | 10.1°C | |
| SEP 26 | 12.0°C | 10.2°C | |
| SEP 27 | 12.0°C | 10.3°C | |
| SEP 28 | 12.0°C | 10.4°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 | 0°C | 3°C |
| February | 0°C | 1°C | 2°C |
| March | 0°C | 1°C | 2°C |
| April | 0°C | 2°C | 5°C |
| May | 2°C | 7°C | 11°C |
| June | 7°C | 12°C | 17°C |
| July | 10°C | 15°C | 19°C |
| August | 10°C | 15°C | 19°C |
| September | 8°C | 12°C | 17°C |
| October | 2°C | 6°C | 9°C |
| November | 0°C | 2°C | 5°C |
| December | 0°C | 0°C | 3°C |
Trängslet Dam: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Trängslet Dam (often called Trängslet) in Dalarna County forms a large reservoir with clear, cold water typical of central Swedish hydro lakes. Surface temperatures vary strongly with the seasons: in spring (March–May) the water commonly sits between about 2–10 °C (36–50 °F) as it warms up, while summer (June–August) surface temperatures are usually in the 15–20 °C (59–68 °F) band, sometimes reaching around 21–22 °C (70–72 °F) in warm spells. In autumn (September–November) temperatures generally fall to roughly 5–12 °C (41–54 °F). During winter the reservoir often approaches freezing, around 0–4 °C (32–39 °F), and parts of the lake may be ice-covered for several months.
Swimming in the reservoir is possible in many places but not without caution. There are no universal bans on swimming in Swedish reservoirs, but areas immediately adjacent to dam structures, intakes or operational zones are typically restricted for safety reasons; water levels and currents can change suddenly because of hydroelectric operations. The water can be deceptively cold below the surface and in deeper sections, so cold-water shock and hypothermia are real risks. If swimming, choose sheltered bays or established bathing spots, check local signage, and take safety measures such as a companion, flotation aid and awareness of boat traffic and fluctuating water levels.