Gjøvik — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Gjøvik, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Gjøvik today is 11.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit 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 13 | 13.0°C | 16.0°C | |
| SEP 14 | 12.8°C | 16.0°C | |
| SEP 15 | 12.6°C | 16.0°C | |
| SEP 16 | 12.6°C | 16.0°C | |
| SEP 17 | 12.5°C | 16.0°C | |
| SEP 18 | 12.2°C | 16.0°C | |
| SEP 19 | 12.1°C | 16.0°C | |
| SEP 20 | 11.9°C | 16.0°C | |
| SEP 21 | 16.0°C | 11.9°C | |
| SEP 22 | 16.0°C | 12.1°C | |
| SEP 23 | 16.0°C | 12.3°C | |
| SEP 24 | 16.0°C | 12.6°C | |
| SEP 25 | 16.0°C | 12.8°C | |
| SEP 26 | 16.0°C | 13.0°C | |
| SEP 27 | 16.0°C | 13.2°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 | 3°C | 6°C |
| April | 1°C | 5°C | 8°C |
| May | 6°C | 11°C | 16°C |
| June | 10°C | 16°C | 22°C |
| July | 13°C | 18°C | 23°C |
| August | 14°C | 19°C | 24°C |
| September | 11°C | 16°C | 21°C |
| October | 5°C | 9°C | 12°C |
| November | 1°C | 5°C | 8°C |
| December | 0°C | 3°C | 6°C |
Gjøvik: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Gjøvik sits on the shores of Lake Mjøsa in Innlandet County, and the temperatures of its freshwater bodies vary noticeably through the year. Surface temperatures in Mjøsa typically range from about 0–4 °C (32–39 °F) in winter when ice or near-ice conditions are common, through spring warming around 4–10 °C (39–50 °F). In summer the lake often reaches roughly 16–23 °C (61–73 °F) at the surface on warm, calm days, while deeper water remains cooler. Rivers and smaller streams around Gjøvik, such as Hunnselva and tributaries, are generally cooler and more variable than the lake: expect summer temperatures around 10–18 °C (50–64 °F) and much colder conditions during snowmelt and winter. Weather, wind, water depth and inflow strongly affect these values, so local readings can differ from seasonal averages.
Swimming is commonly practiced and allowed in Gjøvik because of public access to freshwater and designated bathing areas along the lake. Popular spots offer shallow, sheltered sections and piers for accessible entry, but river swimming requires caution due to currents, colder temperatures and variable depths. Water quality in monitored bathing sites is generally suitable for recreational use in summer, yet users should heed local signage, seasonal water-quality reports and safety advice; winter swimming or ice bathing requires experience, preparation and appropriate safety measures.