Jönköping — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Jönköping, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Jönköping today is 17.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| AUG 24 | 16.9°C | 20.0°C | |
| AUG 25 | 16.9°C | 20.0°C | |
| AUG 26 | 16.9°C | 20.0°C | |
| AUG 27 | 16.9°C | 20.0°C | |
| AUG 28 | 17.3°C | 20.0°C | |
| AUG 29 | 17.3°C | 20.0°C | |
| AUG 30 | 17.3°C | 20.0°C | |
| AUG 31 | 17.4°C | 20.0°C | |
| SEP 1 | 15.0°C | 17.8°C | |
| SEP 2 | 15.0°C | 17.6°C | |
| SEP 3 | 15.0°C | 17.5°C | |
| SEP 4 | 15.0°C | 17.3°C | |
| SEP 5 | 15.0°C | 17.2°C | |
| SEP 6 | 15.0°C | 17.0°C | |
| SEP 7 | 15.0°C | 16.9°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 | 4°C | 7°C |
| April | 4°C | 8°C | 11°C |
| May | 9°C | 14°C | 20°C |
| June | 13°C | 19°C | 24°C |
| July | 16°C | 21°C | 26°C |
| August | 14°C | 20°C | 25°C |
| September | 10°C | 15°C | 21°C |
| October | 6°C | 10°C | 13°C |
| November | 3°C | 7°C | 10°C |
| December | 1°C | 5°C | 8°C |
Jönköping: Weather Forecast
September 1
September 2
September 3
September 4
Location & Local Information
Jönköping (Swedish: Jönköping) lies on the southern shore of Lake Vättern, a deep, clear lake whose surface temperatures vary markedly through the year. In spring (March–May) water temperatures are typically low, roughly 2–10 °C (36–50 °F). Early to mid-summer (June–July) sees warming to about 10–18 °C (50–64 °F), with peak summer (late July–August) often reaching 16–22 °C (61–72 °F) in sheltered shallow spots, while deeper water remains colder. Autumn (September–November) temperatures fall back to roughly 8–12 °C (46–54 °F) and in winter (December–February) surface temperatures are close to freezing, about 0–4 °C (32–39 °F), with ice forming in some bays though the whole lake seldom freezes solid.
Swimming around Jönköping is generally allowed and popular during the warmer months because there are municipal beaches and designated bathing areas with good water quality monitoring. However, water remains relatively cool compared with southern lakes, so swimmers should be prepared for chilly conditions and be cautious about hypothermia, sudden wind-driven waves, and limited lifeguard coverage outside major beaches. Authorities may temporarily restrict bathing for safety or water-quality reasons, so observing local signage and following guidance from municipal officials is advisable.