Atnsjøen — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Atnsjøen, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Atnsjøen today is 12.8°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 |
|---|---|---|---|
| JUN 23 | 10.1°C | 12.1°C | |
| JUN 24 | 10.1°C | 12.1°C | |
| JUN 25 | 10.2°C | 12.1°C | |
| JUN 26 | 10.6°C | 12.1°C | |
| JUN 27 | 10.9°C | 12.1°C | |
| JUN 28 | 10.9°C | 12.1°C | |
| JUN 29 | 10.9°C | 12.1°C | |
| JUN 30 | 12.8°C | 12.1°C | |
| JUL 1 | 17.0°C | 13.0°C | |
| JUL 2 | 17.0°C | 13.2°C | |
| JUL 3 | 17.0°C | 13.4°C | |
| JUL 4 | 17.0°C | 13.6°C | |
| JUL 5 | 17.0°C | 13.9°C | |
| JUL 6 | 17.0°C | 14.1°C | |
| JUL 7 | 17.0°C | 14.3°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 | 2°C |
| March | 0°C | 2°C | 2°C |
| April | 0°C | 2°C | 4°C |
| May | 2°C | 7°C | 12°C |
| June | 6°C | 12°C | 18°C |
| July | 11°C | 17°C | 22°C |
| August | 11°C | 17°C | 22°C |
| September | 8°C | 13°C | 19°C |
| October | 2°C | 6°C | 9°C |
| November | 0°C | 2°C | 5°C |
| December | 0°C | 2°C | 3°C |
Atnsjøen: Water Temperature by Location
Atnsjøen: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Atnsjøen, a lake in Innlandet County, typically shows clear seasonal variation in surface water temperatures. In summer months (June–August) the surface often warms to roughly 12–20 °C (54–68 °F), with warmest afternoons on shallow sheltered bays approaching the upper end of that range in warm years. Spring and early summer sees much cooler water, commonly 2–10 °C (36–50 °F) in May and June, while autumn temperatures usually fall through 10–5 °C (50–41 °F) by September and October. In winter Atnsjøen may freeze over or sit close to 0 °C (32 °F) under ice; deep water remains near freezing until thaw. Exact temperatures vary with weather, wind, and local depth.
Swimming in Atnsjøen is generally allowed and used by locals and visitors during the warmer months, largely because Norway’s public access traditions permit bathing in most natural waters. However, suitability depends on temperature, safety and local conditions: summer swimming is pleasant where surface temperatures reach the mid-teens Celsius, while spring and autumn waters are cold enough to cause cold-shock without protection. Winter swimming is possible only with proper ice-safety measures and experience. Visitors should check local signs, respect private shoreline, be mindful of sudden weather changes, and take normal precautions such as wearing a wetsuit if needed, not swimming alone, and being aware of water depth and currents.