Hettefjorden — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Hettefjorden, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Hettefjorden today is 11.2°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 |
|---|---|---|---|
| AUG 3 | 11.6°C | 13.0°C | |
| AUG 4 | 11.6°C | 13.0°C | |
| AUG 5 | 11.6°C | 13.0°C | |
| AUG 6 | 11.1°C | 13.0°C | |
| AUG 7 | 11.1°C | 13.0°C | |
| AUG 8 | 11.1°C | 13.0°C | |
| AUG 9 | 11.1°C | 13.0°C | |
| AUG 10 | 11.2°C | 13.0°C | |
| AUG 11 | 13.0°C | 11.3°C | |
| AUG 12 | 13.0°C | 11.4°C | |
| AUG 13 | 13.0°C | 11.5°C | |
| AUG 14 | 13.0°C | 11.6°C | |
| AUG 15 | 13.0°C | 11.7°C | |
| AUG 16 | 13.0°C | 11.7°C | |
| AUG 17 | 13.0°C | 11.8°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 | 3°C |
| April | 0°C | 2°C | 2°C |
| May | 0°C | 5°C | 10°C |
| June | 4°C | 11°C | 17°C |
| July | 7°C | 12°C | 18°C |
| August | 8°C | 13°C | 19°C |
| September | 5°C | 10°C | 15°C |
| October | 0°C | 3°C | 6°C |
| November | 0°C | 2°C | 2°C |
| December | 0°C | 2°C | 3°C |
Hettefjorden: Water Temperature by Location
Hettefjorden: Weather Forecast
August 11
August 12
August 13
August 14
August 15
Location & Local Information
Hettefjorden is a typical forested lake in the Buskerud area of southern Norway, and its water temperatures reflect the cool, seasonal climate. In winter the surface is usually close to freezing, roughly 0–4 °C (32–39 °F), often with ice cover. During spring temperatures rise gradually to about 2–8 °C (36–46 °F) as snowmelt and runoff cool the water. In the warmest months, July and August, surface temperatures commonly reach about 10–18 °C (50–64 °F), with occasional warm summers producing brief peaks near 20 °C (68 °F). By autumn the water cools again to roughly 4–10 °C (39–50 °F). Actual temperatures at Hettefjorden depend on local factors such as depth, shading, inflow, and year-to-year weather variation, so these ranges are typical rather than exact.
Swimming at Hettefjorden is generally allowed under Norway’s public access traditions, and people do swim there during the warmer weeks. However, even summer lake water can feel cold compared with coastal bathing spots, and there are no guaranteed lifeguards or facilities; ice and near-freezing conditions make swimming unsafe in winter. Visitors should judge conditions carefully, be aware of cold-water shock, use a wetsuit if needed, avoid swimming alone, and respect any local signs or private restrictions that may apply.