Namsen River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Namsen River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Namsen River today is 2.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters. 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 |
|---|---|---|---|
| APR 11 | 2.3°C | 0.0°C | |
| APR 12 | 2.3°C | 0.0°C | |
| APR 13 | 2.2°C | 0.0°C | |
| APR 14 | 2.3°C | 0.0°C | |
| APR 15 | 2.4°C | 0.0°C | |
| APR 16 | 2.6°C | 0.0°C | |
| APR 17 | 2.6°C | 0.0°C | |
| APR 18 | 2.7°C | 0.0°C | |
| APR 19 | 0.0°C | 2.6°C | |
| APR 20 | 0.0°C | 2.4°C | |
| APR 21 | 0.0°C | 2.3°C | |
| APR 22 | 0.0°C | 2.2°C | |
| APR 23 | 0.0°C | 2.0°C | |
| APR 24 | 0.0°C | 1.9°C | |
| APR 25 | 0.0°C | 1.8°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 | 0°C | 3°C |
| February | 0°C | 0°C | 3°C |
| March | 0°C | 2°C | 5°C |
| April | 0°C | 0°C | 3°C |
| May | 1°C | 6°C | 10°C |
| June | 8°C | 12°C | 17°C |
| July | 11°C | 16°C | 20°C |
| August | 10°C | 15°C | 19°C |
| September | 7°C | 11°C | 16°C |
| October | 3°C | 7°C | 9°C |
| November | 0°C | 4°C | 7°C |
| December | 0°C | 1°C | 4°C |
Namsen River: Water Temperature by Location
Namsen River: Weather Forecast
April 19
April 20
April 21
April 22
Location & Local Information
Source Namsvatnet
• location Røyrvik Municipality, Norway
• coordinates 64°59′57″N 13°44′32″E
• elevation 455 metres (1,493 ft)
Mouth Namsenfjorden
• location Namsos, Norway
• coordinates 64°27′52″N 11°31′10″E
• elevation 0 metres (0 ft)
Length 228 km (142 mi)
The Namsen (Namsen) in Trøndelag County is a large, glacier- and snow-fed river whose water remains relatively cool year-round. Seasonal surface temperatures typically range from about 0–4 °C (32–39 °F) in winter, 2–8 °C (36–46 °F) in spring as snowmelt continues, 10–18 °C (50–64 °F) in the warmest summer months in shallow, sun-exposed stretches, and 5–12 °C (41–54 °F) in autumn. Exact temperatures vary with location along the river, water depth, recent precipitation and runoff, and tidal influence closer to the estuary. Even in summer the main channel is colder than small side arms or sheltered pools.
Swimming is generally possible but requires caution. Norway’s public access tradition means many riverbanks are reachable, and people do swim in calmer side channels, pools and downstream areas when temperatures rise. However, strong currents, cold shock risk, variable depths and fishing activity (especially for salmon) make some parts unsafe or unsuitable for casual bathing. Seasonal restrictions, private property and local regulations can also limit access in particular stretches. Anyone considering swimming in the Namsen should assess local conditions, enter slowly to acclimatize, and avoid fast-flowing or unfamiliar sections.