Försjön — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Försjön, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Försjön today is 9.6°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 47°F (8°C) to 50°F (10°C). This is still cool water, suitable only for experienced swimmers or those accustomed to cold water. Swimming in such conditions is possible, but not recommended for prolonged periods. Extra caution should be taken during extended exposure, as the cold water can cause heat loss and lead to hypothermia. For added comfort, special clothing 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 |
|---|---|---|---|
| OCT 4 | 11.1°C | 9.0°C | |
| OCT 5 | 10.7°C | 9.0°C | |
| OCT 6 | 10.5°C | 9.0°C | |
| OCT 7 | 10.4°C | 9.0°C | |
| OCT 8 | 10.5°C | 9.0°C | |
| OCT 9 | 10.3°C | 9.0°C | |
| OCT 10 | 9.8°C | 9.0°C | |
| OCT 11 | 9.6°C | 9.0°C | |
| OCT 12 | 9.0°C | 9.6°C | |
| OCT 13 | 9.0°C | 9.5°C | |
| OCT 14 | 9.0°C | 9.5°C | |
| OCT 15 | 9.0°C | 9.5°C | |
| OCT 16 | 9.0°C | 9.5°C | |
| OCT 17 | 9.0°C | 9.4°C | |
| OCT 18 | 9.0°C | 9.4°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 | 4°C |
| February | 0°C | 0°C | 4°C |
| March | 0°C | 3°C | 6°C |
| April | 3°C | 7°C | 10°C |
| May | 8°C | 13°C | 19°C |
| June | 12°C | 18°C | 23°C |
| July | 14°C | 20°C | 25°C |
| August | 13°C | 19°C | 24°C |
| September | 9°C | 14°C | 20°C |
| October | 5°C | 9°C | 12°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 4°C | 7°C |
Försjön: Water Temperature by Location
Försjön: Weather Forecast
October 11
October 12
October 13
October 14
October 15
Location & Local Information
The lake known locally as Försjön in Jönköping County typically follows the seasonal temperature patterns of small Swedish lakes. In winter the surface is usually close to freezing, around 0–4 °C (32–39 °F) and often ice-covered for periods. Spring sees a gradual rise, roughly 4–10 °C (39–50 °F), while summer brings the warmest conditions: surface temperatures commonly range from about 18–24 °C (64–75 °F) and in shallow, sun‑exposed bays can briefly reach 25–26 °C (77–79 °F). During autumn the water cools again, most often sitting between 6–12 °C (43–54 °F). Local variation in depth, inflow and weather means temperatures can change quickly from one year to the next.
Swimming at Försjön is generally permitted under Swedish public access traditions, and many people bathe in lakes during the warmer months. Whether there are designated bathing areas, lifeguards or municipal water‑quality monitoring may vary, so swimmers should heed local signs and guidance. Important considerations include colder temperatures outside summer that increase the risk of cold shock and hypothermia, and the hazards of ice in winter unless officially deemed safe. In short, summer swimming is the most comfortable and common, while other seasons require caution and local information.