Sværsvann Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Sværsvann Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Sværsvann Lake today is 4.8°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 24 | 6.0°C | 11.0°C | |
| OCT 25 | 6.2°C | 11.0°C | |
| OCT 26 | 5.9°C | 11.0°C | |
| OCT 27 | 5.6°C | 11.0°C | |
| OCT 28 | 5.2°C | 11.0°C | |
| OCT 29 | 5.3°C | 11.0°C | |
| OCT 30 | 4.8°C | 11.0°C | |
| OCT 31 | 4.8°C | 11.0°C | |
| NOV 1 | 7.0°C | 4.9°C | |
| NOV 2 | 7.0°C | 5.0°C | |
| NOV 3 | 7.0°C | 5.1°C | |
| NOV 4 | 7.0°C | 5.2°C | |
| NOV 5 | 7.0°C | 5.4°C | |
| NOV 6 | 7.0°C | 5.5°C | |
| NOV 7 | 7.0°C | 5.6°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 | 10°C | 17°C | 24°C |
| July | 16°C | 22°C | 27°C |
| August | 16°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 |
Sværsvann Lake: Water Temperature by Location
Sværsvann Lake: Weather Forecast
October 31
November 1
November 2
November 3
November 4
Location & Local Information
Sværsvann is a small lake in Oslo known locally as a recreational spot, and its water temperature follows the typical seasonal pattern for southeastern Norway. In early spring (April–May) surface temperatures are often low, roughly 2–10 °C (36–50 °F), rising through late spring and early summer to about 10–18 °C (50–64 °F) in June. The warmest months, July and August, commonly see water between 16–22 °C (61–72 °F), occasionally a few degrees higher during heat waves. In autumn (September–October) temperatures fall again to roughly 8–14 °C (46–57 °F), and in winter the lake usually approaches freezing; surface temperatures are around 0 °C (32 °F) when ice forms.
Swimming at Sværsvann is generally allowed and practiced by locals during the summer, since there are no formal bans on bathing in most Norwegian lakes. Popularity stems from easy access and suitable summer temperatures for bathing, but there are no staffed lifeguards, and conditions can vary: water depth, underwater terrain, and occasional algal growth can affect safety and comfort. In winter, swimming is not typical because of ice cover and hypothermia risk, though some people do ice bathing with proper precautions. As always, swimmers should judge conditions, wear appropriate gear, and avoid taking unnecessary risks.