Ustevatn — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Ustevatn, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Ustevatn today is 8.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing 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 | 9.5°C | 12.0°C | |
| SEP 15 | 9.4°C | 12.0°C | |
| SEP 16 | 9.3°C | 12.0°C | |
| SEP 17 | 8.9°C | 12.0°C | |
| SEP 18 | 9.1°C | 12.0°C | |
| SEP 19 | 8.6°C | 12.0°C | |
| SEP 20 | 8.4°C | 12.0°C | |
| SEP 22 | 12.0°C | 8.7°C | |
| SEP 23 | 12.0°C | 8.9°C | |
| SEP 24 | 12.0°C | 9.0°C | |
| SEP 25 | 12.0°C | 9.2°C | |
| SEP 26 | 12.0°C | 9.4°C | |
| SEP 27 | 12.0°C | 9.6°C | |
| SEP 28 | 12.0°C | 9.7°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 | 3°C |
| February | 0°C | 2°C | 3°C |
| March | 0°C | 2°C | 2°C |
| April | 0°C | 2°C | 4°C |
| May | 0°C | 7°C | 12°C |
| June | 5°C | 12°C | 19°C |
| July | 9°C | 14°C | 20°C |
| August | 10°C | 15°C | 21°C |
| September | 7°C | 12°C | 18°C |
| October | 1°C | 5°C | 8°C |
| November | 0°C | 2°C | 4°C |
| December | 0°C | 2°C | 2°C |
Ustevatn: Water Temperature by Location
Ustevatn: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Ustevatn in Buskerud County is a freshwater lake that follows a typical Norwegian inland seasonal pattern in water temperature. In winter the surface usually approaches freezing, around 0 °C (32 °F), and the lake is often ice-covered for months. During spring thaw temperatures rise from about 1–8 °C (34–46 °F) as snowmelt and cooler air continue to influence the water. Peak summer temperatures are generally moderate, commonly in the range of 12–20 °C (54–68 °F) on warm days, though brief heat spells can push surface values slightly higher. In autumn the water cools again, falling to roughly 4–10 °C (39–50 °F) before ice forms.
Swimming in Ustevatn is generally allowed, reflecting Norway’s broad public access traditions and the absence of widespread formal bans on lake swimming. Practical opportunities are seasonal: summer and the warmer parts of late spring and early autumn offer the most comfortable conditions for bathing, while winter swimming is only suitable for experienced cold-water swimmers with proper precautions because ice cover and near-freezing temperatures create significant hazards. Visitors should consider sudden weather changes, chilly depths, variable entry points, and the lack of lifeguards; common-sense precautions and checking local conditions make swimming safer and more enjoyable.