Fjerdvatnet — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Fjerdvatnet, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Fjerdvatnet today is 9.6°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 | 11.0°C | 11.0°C | |
| SEP 15 | 11.3°C | 11.0°C | |
| SEP 16 | 10.6°C | 11.0°C | |
| SEP 17 | 10.4°C | 11.0°C | |
| SEP 18 | 10.2°C | 11.0°C | |
| SEP 19 | 10.0°C | 11.0°C | |
| SEP 20 | 9.8°C | 11.0°C | |
| SEP 21 | 9.6°C | 11.0°C | |
| SEP 22 | 11.0°C | 9.7°C | |
| SEP 23 | 11.0°C | 9.7°C | |
| SEP 24 | 11.0°C | 9.8°C | |
| SEP 25 | 11.0°C | 9.9°C | |
| SEP 26 | 11.0°C | 10.0°C | |
| SEP 27 | 11.0°C | 10.0°C | |
| SEP 28 | 11.0°C | 10.1°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 | 0°C | 4°C |
| February | 0°C | 0°C | 4°C |
| March | 0°C | 0°C | 4°C |
| April | 0°C | 2°C | 5°C |
| May | 0°C | 5°C | 10°C |
| June | 6°C | 11°C | 17°C |
| July | 10°C | 15°C | 21°C |
| August | 9°C | 14°C | 20°C |
| September | 6°C | 11°C | 17°C |
| October | 1°C | 5°C | 8°C |
| November | 0°C | 3°C | 6°C |
| December | 0°C | 0°C | 4°C |
Fjerdvatnet: Water Temperature by Location
Fjerdvatnet: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Fjerdvatnet in Nordland is a typical northern Norwegian lake where temperatures vary markedly with the seasons and local conditions such as depth, shading and inflow from rivers. In winter the surface commonly approaches freezing, around 0 °C (32 °F) when ice forms; during spring and early thaw it typically ranges from about 2–8 °C (36–46 °F) as snowmelt cools the water. In summer, on warmer sunny days and in shallower bays, surface temperatures can reach roughly 10–16 °C (50–61 °F), while deeper parts remain cooler. In autumn the lake cools again, often sitting between 4–10 °C (39–50 °F) before ice returns.
Swimming in Fjerdvatnet is generally allowed, reflecting Norway’s public right of access to nature and the absence of broad legal bans on bathing in such lakes. Practical swimming opportunities, however, depend on water temperature and safety: summer months offer the most comfortable conditions for short swims, while spring and autumn waters are brisk and winter swimming is hazardous without ice-safety precautions or specialized gear. Visitors should assess local conditions, watch for cold-water shock risks, use wetsuits if needed, and respect any local signs or private shoreline ownership that could restrict access.