Kongsberg — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Kongsberg, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Kongsberg today is 11.7°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 13 | 12.2°C | 15.0°C | |
| SEP 14 | 12.5°C | 15.0°C | |
| SEP 15 | 11.9°C | 15.0°C | |
| SEP 16 | 11.5°C | 15.0°C | |
| SEP 17 | 12.0°C | 15.0°C | |
| SEP 18 | 12.3°C | 15.0°C | |
| SEP 19 | 12.0°C | 15.0°C | |
| SEP 20 | 11.9°C | 15.0°C | |
| SEP 21 | 15.0°C | 11.9°C | |
| SEP 22 | 15.0°C | 12.0°C | |
| SEP 23 | 15.0°C | 12.2°C | |
| SEP 24 | 15.0°C | 12.4°C | |
| SEP 25 | 15.0°C | 12.5°C | |
| SEP 26 | 15.0°C | 12.7°C | |
| SEP 27 | 15.0°C | 12.9°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 | 1°C | 5°C | 9°C |
| May | 6°C | 10°C | 15°C |
| June | 10°C | 15°C | 20°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 10°C | 15°C | 19°C |
| October | 6°C | 9°C | 12°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 3°C | 6°C |
Kongsberg: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Kongsberg (Norwegian: Kongsberg) in Buskerud County sits among forested hills and inland waters, and local lakes reflect the region’s temperate continental climate. Typical lake temperatures vary a lot by season: in winter many smaller lakes hover around 0–4 °C (32–39 °F) and often freeze over; spring temperatures commonly rise from about 4–12 °C (39–54 °F) as ice melts; summer bathing temperatures in sheltered, shallow lakes are generally in the 14–22 °C range (57–72 °F), with the warmest spots occasionally reaching the low-to-mid 20s °C (73–75 °F) during heat spells; autumn cools again to roughly 6–12 °C (43–54 °F). Exact values depend on depth, shading, and recent weather.
Swimming in lakes around Kongsberg is widely practised and generally allowed under Norway’s public access traditions, but local rules can restrict access at reservoirs, near dams, or on private shorelines. Popular spots and designated swimming areas are used in summer because water temperatures then are comfortable for short swims. Safety considerations — cold shock at low temperatures, absence of lifeguards at many sites, underwater hazards, and boat traffic — mean swimmers should check signage, choose marked beaches where available, and use protective clothing like wetsuits if swimming outside peak summer warmth.