Store Tryvannet — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Store Tryvannet, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Store Tryvannet today is 11.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used. 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 |
|---|---|---|---|
| SEP 14 | 12.0°C | 17.0°C | |
| SEP 15 | 12.3°C | 17.0°C | |
| SEP 16 | 12.2°C | 17.0°C | |
| SEP 17 | 12.0°C | 17.0°C | |
| SEP 18 | 11.8°C | 17.0°C | |
| SEP 19 | 11.7°C | 17.0°C | |
| SEP 20 | 11.6°C | 17.0°C | |
| SEP 21 | 11.4°C | 17.0°C | |
| SEP 22 | 17.0°C | 11.7°C | |
| SEP 23 | 17.0°C | 12.0°C | |
| SEP 24 | 17.0°C | 12.2°C | |
| SEP 25 | 17.0°C | 12.5°C | |
| SEP 26 | 17.0°C | 12.8°C | |
| SEP 27 | 17.0°C | 13.1°C | |
| SEP 28 | 17.0°C | 13.4°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 | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 6°C |
| April | 0°C | 5°C | 10°C |
| May | 5°C | 11°C | 17°C |
| June | 9°C | 16°C | 23°C |
| July | 15°C | 21°C | 26°C |
| August | 14°C | 20°C | 26°C |
| September | 11°C | 17°C | 22°C |
| October | 6°C | 10°C | 13°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 3°C | 6°C |
Store Tryvannet: Water Temperature by Location
Store Tryvannet: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Store Tryvannet is a small lake in the Oslo area whose surface temperatures follow the typical seasonal pattern for inland Norwegian waters. In spring (April–May) the surface is usually cool, roughly 2–12 °C (36–54 °F) as air temperatures climb and ice melts. In summer (June–August) the lake commonly warms to about 15–22 °C (59–72 °F), and on warm spells may reach around 24 °C (75 °F). Autumn (September–November) brings a steady cooling to roughly 6–14 °C (43–57 °F) as daylight and air temperatures fall. During winter months (December–March) the lake is often at or below freezing and frequently ice-covered; when unfrozen or close to the freezing point surface waters may be around 0–4 °C (32–39 °F) but can be much colder at depth.
Swimming at Store Tryvannet is generally possible and commonly practiced in the warmer months because it is a publicly accessible natural lake, but there are no formal lifeguards or extensive bathing facilities. Water quality in such lakes is usually acceptable for bathing but can vary with runoff, algae conditions, and recent weather, so local advisories or signage should be checked. Caution is advised for depth changes, cold-water shock after short exposure, and especially ice safety in winter, when swimming is unsafe except for organized, well-equipped cold-water or ice-swimming activities with proper precautions.