Tämnaren Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Tämnaren Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Tämnaren Lake today is 3.9°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 |
|---|---|---|---|
| OCT 23 | 4.6°C | 9.0°C | |
| OCT 24 | 5.2°C | 9.0°C | |
| OCT 25 | 5.0°C | 9.0°C | |
| OCT 26 | 4.8°C | 9.0°C | |
| OCT 27 | 4.5°C | 9.0°C | |
| OCT 28 | 4.3°C | 9.0°C | |
| OCT 29 | 4.3°C | 9.0°C | |
| OCT 30 | 4.2°C | 9.0°C | |
| OCT 31 | 9.0°C | 4.0°C | |
| NOV 1 | 5.0°C | 4.0°C | |
| NOV 2 | 5.0°C | 4.1°C | |
| NOV 3 | 5.0°C | 4.1°C | |
| NOV 4 | 5.0°C | 4.2°C | |
| NOV 5 | 5.0°C | 4.2°C | |
| NOV 6 | 5.0°C | 4.3°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 | 5°C | 8°C |
| May | 6°C | 11°C | 17°C |
| June | 12°C | 18°C | 23°C |
| July | 13°C | 19°C | 24°C |
| August | 14°C | 20°C | 25°C |
| September | 11°C | 17°C | 22°C |
| October | 5°C | 9°C | 12°C |
| November | 1°C | 5°C | 8°C |
| December | 0°C | 3°C | 6°C |
Tämnaren Lake: Water Temperature by Location
Tämnaren Lake: Weather Forecast
October 31
November 1
November 2
November 3
November 4
Location & Local Information
Lake Tämnaren in Uppsala County typically follows the seasonal temperature patterns of inland Swedish lakes. In winter the surface is often close to freezing, about 0–4 °C (32–39 °F), especially where ice forms. Spring warming brings temperatures into roughly 2–12 °C (36–54 °F) as the water stratifies. Summer surface values commonly range from about 16–24 °C (61–75 °F) on warm days, though short heat waves can push the shallow near-shore water slightly higher. In autumn the lake cools again, with surface temperatures generally between 8–16 °C (46–61 °F) as turnover and winds mix the water. Actual temperatures vary with weather, depth and location around the lake, so readings at a shallow beach will differ from deeper basins.
Swimming in Tämnaren is generally possible and commonly practiced in the warmer months; Sweden’s public access tradition (allemansrätten) means many shores are reachable for swimming, but some properties or designated areas may be private or signed. There are usually no permanent lifeguards, so visitors should judge conditions, water temperature and their own abilities before entering. Winter ice swimming is done by some locals where ice is safely thick and cleared, but it requires experience and safety measures. Always observe local signage and respect private land.