Sognsvann Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Sognsvann Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Sognsvann Lake today is 3.3°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 |
|---|---|---|---|
| APR 11 | 2.8°C | 6.4°C | |
| APR 12 | 3.1°C | 6.4°C | |
| APR 13 | 2.9°C | 6.4°C | |
| APR 14 | 3.0°C | 6.4°C | |
| APR 15 | 3.0°C | 6.4°C | |
| APR 16 | 3.3°C | 6.4°C | |
| APR 17 | 3.3°C | 6.4°C | |
| APR 18 | 3.3°C | 6.4°C | |
| APR 19 | 6.4°C | 3.5°C | |
| APR 20 | 6.4°C | 3.6°C | |
| APR 21 | 6.4°C | 3.8°C | |
| APR 22 | 6.4°C | 3.9°C | |
| APR 23 | 6.4°C | 4.1°C | |
| APR 24 | 6.4°C | 4.2°C | |
| APR 25 | 6.4°C | 4.4°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 | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 0°C | 4°C | 7°C |
| April | 1°C | 6°C | 11°C |
| May | 7°C | 12°C | 18°C |
| June | 13°C | 19°C | 24°C |
| July | 17°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 |
Sognsvann Lake: Water Temperature by Location
Sognsvann Lake: Weather Forecast
April 19
April 20
April 21
April 22
Location & Local Information
Sognsvann, a small lake just north of Oslo, is a popular local spot for swimming and outdoor recreation. In summer months the water typically warms to around 15–22 °C (59–72 °F), occasionally reaching the mid-20s °C (mid-70s °F) during warm spells, making it comfortable for casual bathing. Swimming is allowed and common: there are public access points, grassy banks and simple facilities nearby, and the lake is used for leisure rather than regulated, commercial bathing. There are no permanent lifeguards, so swimmers should judge conditions and their own abilities.
Seasonal temperature patterns are pronounced. In spring the water often sits between about 4–10 °C (39–50 °F) while it slowly warms; in autumn it cools again to roughly 8–12 °C (46–54 °F) early on and drops toward 4–8 °C (39–46 °F) later. In winter the surface can freeze and water temperatures are close to 0–4 °C (32–39 °F) under the ice; some people practice icy dips, but this carries clear risks. Water quality is generally good and monitored periodically by local authorities, which is one reason public swimming is tolerated, yet visitors should follow posted guidance and exercise caution, especially outside the warm-season months.