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 19.1°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 |
|---|---|---|---|
| JUL 15 | 20.0°C | 21.7°C | |
| JUL 16 | 20.0°C | 21.7°C | |
| JUL 17 | 21.0°C | 21.7°C | |
| JUL 18 | 21.0°C | 21.7°C | |
| JUL 19 | 20.9°C | 21.7°C | |
| JUL 20 | 20.9°C | 21.7°C | |
| JUL 21 | 18.9°C | 21.7°C | |
| JUL 23 | 21.7°C | 19.2°C | |
| JUL 24 | 21.7°C | 19.4°C | |
| JUL 25 | 21.7°C | 19.5°C | |
| JUL 26 | 21.7°C | 19.6°C | |
| JUL 27 | 21.7°C | 19.8°C | |
| JUL 28 | 21.7°C | 19.9°C | |
| JUL 29 | 21.7°C | 20.0°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 | 17°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
July 22
July 23
July 24
July 25
July 26
July 27
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.