Namsos — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Namsos, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Namsos today is 12.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 2 | 13.4°C | 11.0°C | |
| SEP 3 | 13.7°C | 11.0°C | |
| SEP 4 | 13.5°C | 11.0°C | |
| SEP 5 | 13.0°C | 11.0°C | |
| SEP 6 | 13.2°C | 11.0°C | |
| SEP 7 | 12.9°C | 11.0°C | |
| SEP 8 | 12.6°C | 11.0°C | |
| SEP 9 | 12.5°C | 11.0°C | |
| SEP 10 | 11.0°C | 12.4°C | |
| SEP 11 | 11.0°C | 12.4°C | |
| SEP 12 | 11.0°C | 12.3°C | |
| SEP 13 | 11.0°C | 12.2°C | |
| SEP 14 | 11.0°C | 12.1°C | |
| SEP 15 | 11.0°C | 12.1°C | |
| SEP 16 | 11.0°C | 12.0°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 | 2°C | 5°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 |
Namsos: Weather Forecast
September 10
September 11
September 12
September 13
September 14
Location & Local Information
Lakes around Namsos in Trøndelag typically show pronounced seasonal variation in surface temperature. In spring (March–May) water often warms from near freezing to roughly 0–10 °C (32–50 °F) as ice melts and daylight increases. Summer (June–August) brings the warmest conditions, with many shallow, sheltered lakes commonly reaching 12–22 °C (54–72 °F) on pleasant days; deeper or more shaded lakes remain a few degrees cooler. In autumn (September–November) temperatures fall again to roughly 4–12 °C (39–54 °F), and in winter the surface is frequently close to 0 °C (32 °F) and may be ice-covered for periods depending on local conditions and elevation.
Swimming in lakes near Namsos is generally permitted and commonly practiced in summer because of Norway’s right of access (allemannsretten) and the availability of public bathing spots and simple facilities. Local municipalities monitor water quality at popular beaches, so swimming is advisable when there are no official advisories. Cold water shock and rapid cooling are the main safety concerns outside mid-summer, and ice or thin ice in winter makes swimming unsafe. As always, swimmers should choose sheltered, clearly accessible spots, be aware of weather and temperature, and use caution if conditions are cool or variable.