Hammervatnet — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Hammervatnet, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Hammervatnet today is 3.1°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 | 2.6°C | 2.0°C | |
| APR 12 | 2.7°C | 2.0°C | |
| APR 13 | 2.7°C | 2.0°C | |
| APR 14 | 2.7°C | 2.0°C | |
| APR 15 | 2.7°C | 2.0°C | |
| APR 16 | 3.1°C | 2.0°C | |
| APR 17 | 3.1°C | 2.0°C | |
| APR 18 | 3.1°C | 2.0°C | |
| APR 19 | 2.0°C | 3.0°C | |
| APR 20 | 2.0°C | 3.0°C | |
| APR 21 | 2.0°C | 2.9°C | |
| APR 22 | 2.0°C | 2.9°C | |
| APR 23 | 2.0°C | 2.8°C | |
| APR 24 | 2.0°C | 2.8°C | |
| APR 25 | 2.0°C | 2.7°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 | 2°C | 5°C |
| April | 0°C | 2°C | 5°C |
| May | 3°C | 8°C | 13°C |
| June | 11°C | 17°C | 22°C |
| July | 14°C | 20°C | 25°C |
| August | 12°C | 18°C | 23°C |
| September | 8°C | 13°C | 19°C |
| October | 4°C | 8°C | 11°C |
| November | 0°C | 3°C | 6°C |
| December | 0°C | 2°C | 5°C |
Hammervatnet: Water Temperature by Location
Hammervatnet: Weather Forecast
April 19
April 20
April 21
April 22
Location & Local Information
Hammervatnet in Trøndelag County is a typical Norwegian inland lake whose surface temperatures vary markedly through the year. During summer months (June–August) surface water commonly warms to roughly 12–20 °C (54–68 °F), with the warmest days occasionally pushing a degree or two higher in shallow bays. In spring (April–May) and early autumn (September), temperatures more often sit between about 4–10 °C (39–50 °F), while in winter the lake approaches freezing at the surface and can be ice-covered; near-zero values around 0 °C (32 °F) are usual where ice forms, and colder air temperatures make open-water swimming uncommon.
Swimming in Hammervatnet is generally allowed, as Norway’s public right of access permits bathing where it is safe and not restricted by local rules. Practically, recreational swimming is most common in the ice-free season when surface temperatures are tolerable. Caution is advised in shoulder seasons because cold water presents risks of cold-water shock and reduced stamina. Some people practice winter bathing or ice-swimming, but that requires experience, safety measures and local knowledge about ice thickness and emergency procedures. Always check local signage and conditions before entering the water.