Regnaren Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Regnaren Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Regnaren Lake today is 18.9°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 24 | 17.9°C | 20.0°C | |
| AUG 25 | 17.9°C | 20.0°C | |
| AUG 26 | 17.9°C | 20.0°C | |
| AUG 27 | 17.9°C | 20.0°C | |
| AUG 28 | 18.3°C | 20.0°C | |
| AUG 29 | 18.3°C | 20.0°C | |
| AUG 30 | 18.3°C | 20.0°C | |
| AUG 31 | 18.4°C | 20.0°C | |
| SEP 1 | 17.0°C | 18.8°C | |
| SEP 2 | 17.0°C | 18.7°C | |
| SEP 3 | 17.0°C | 18.6°C | |
| SEP 4 | 17.0°C | 18.5°C | |
| SEP 5 | 17.0°C | 18.4°C | |
| SEP 6 | 17.0°C | 18.3°C | |
| SEP 7 | 17.0°C | 18.2°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 | 4°C | 8°C | 11°C |
| May | 8°C | 13°C | 19°C |
| June | 13°C | 19°C | 24°C |
| July | 16°C | 21°C | 26°C |
| August | 14°C | 20°C | 25°C |
| September | 11°C | 17°C | 22°C |
| October | 6°C | 10°C | 13°C |
| November | 3°C | 7°C | 10°C |
| December | 0°C | 4°C | 7°C |
Regnaren Lake: Water Temperature by Location
Regnaren Lake: Weather Forecast
September 1
September 2
September 3
September 4
Location & Local Information
Regnaren, a freshwater lake in Östergötland County, typically follows the seasonal temperature patterns of southern Swedish inland lakes. During summer months surface temperatures commonly range from about 15–24 °C (59–75 °F), with heatwaves occasionally pushing values a few degrees higher. In spring, as ice melts and water warms, temperatures are often between roughly 0–10 °C (32–50 °F), while autumn cooling produces surface values around 8–15 °C (46–59 °F). In winter the lake is frequently close to freezing, with surface water near 0–4 °C (32–39 °F) and sections sometimes covered by ice for parts of the season. Actual temperatures vary with weather, depth and local inflows, so daily measurements can differ from these typical ranges.
Swimming in Regnaren is generally possible and often practiced in the warmer months, and public access to shorelines in Sweden usually means people may enter the water unless specific signs or private restrictions apply. Water quality in many Östergötland lakes is suitable for bathing, but it can vary, so checking local advisories is wise. Cold-water risks such as cold shock and hypothermia apply in spring and autumn, and ice safety is critical in winter; use caution, swim with companions, and follow any posted guidance.