Nässjö — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Nässjö, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Nässjö today is 5.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 41°F (5°C) to 47°F (8°C). This water temperature is still quite low, and swimming in such conditions may only be comfortable for hardened individuals. It is recommended to limit the time spent in the water to avoid hypothermia. For those not accustomed to cold water, it is better to refrain from swimming. However, if you decide to enter the water, it is advisable to wear a warm wetsuit for protection against the cold. 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 | 4.8°C | 7.0°C | |
| APR 12 | 4.8°C | 7.0°C | |
| APR 13 | 4.8°C | 7.0°C | |
| APR 14 | 5.0°C | 7.0°C | |
| APR 15 | 5.0°C | 7.0°C | |
| APR 16 | 5.0°C | 7.0°C | |
| APR 17 | 5.0°C | 7.0°C | |
| APR 18 | 5.9°C | 7.0°C | |
| APR 19 | 7.0°C | 6.0°C | |
| APR 20 | 7.0°C | 6.0°C | |
| APR 21 | 7.0°C | 6.1°C | |
| APR 22 | 7.0°C | 6.1°C | |
| APR 23 | 7.0°C | 6.2°C | |
| APR 24 | 7.0°C | 6.2°C | |
| APR 25 | 7.0°C | 6.3°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 | 4°C |
| February | 0°C | 2°C | 4°C |
| March | 0°C | 3°C | 6°C |
| April | 3°C | 7°C | 10°C |
| May | 8°C | 13°C | 18°C |
| June | 12°C | 17°C | 22°C |
| July | 14°C | 19°C | 24°C |
| August | 13°C | 18°C | 23°C |
| September | 9°C | 14°C | 19°C |
| October | 5°C | 9°C | 12°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 4°C | 7°C |
Nässjö: Weather Forecast
April 19
April 20
April 21
April 22
Location & Local Information
Nässjö, located in Jönköping County, is surrounded by small lakes and slow-moving rivers that show clear seasonal variation in temperature. In spring waters typically run cold as ice breaks up, roughly 2–12 °C (35.6–53.6 °F). In summer the surface of shallow bays and protected lake inlets commonly warms to about 15–24 °C (59–75.2 °F), with brief heatwave highs occasionally reaching the mid‑20s °C (around 77 °F). Rivers and deeper parts of larger lakes tend to be a few degrees cooler than sheltered shallows, so one can expect summer river temperatures often several degrees below lake surfaces. During autumn temperatures fall back toward 5–15 °C (41–59 °F), and winter brings near‑freezing conditions, generally 0–4 °C (32–39.2 °F) when open water remains, with ice cover common at the coldest times.
Swimming in Nässjö’s freshwater is generally possible and practised at public bathing spots and informal shorelines because Sweden’s public access traditions allow entry to most natural waters. Municipalities test and report bathing water quality at popular sites and post warnings when cyanobacteria or contamination is present; such advisories should be followed. Cold or icy conditions make safe bathing impractical in winter except at designated winter‑bathing locations with appropriate safety measures. Visitors should also consider currents, depth and the absence of lifeguards at many rural spots when deciding to swim.