Långasjön — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Långasjön, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Långasjön today is 18.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 | 18.2°C | 20.0°C | |
| AUG 25 | 18.2°C | 20.0°C | |
| AUG 26 | 18.2°C | 20.0°C | |
| AUG 27 | 18.2°C | 20.0°C | |
| AUG 28 | 18.4°C | 20.0°C | |
| AUG 29 | 18.4°C | 20.0°C | |
| AUG 30 | 18.4°C | 20.0°C | |
| AUG 31 | 18.4°C | 20.0°C | |
| SEP 1 | 17.0°C | 18.8°C | |
| SEP 2 | 17.0°C | 18.7°C | |
| SEP 3 | 17.0°C | 18.6°C | |
| SEP 4 | 17.0°C | 18.5°C | |
| SEP 5 | 17.0°C | 18.4°C | |
| SEP 6 | 17.0°C | 18.3°C | |
| SEP 7 | 17.0°C | 18.2°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 | 3°C | 6°C |
| February | 0°C | 3°C | 6°C |
| March | 2°C | 6°C | 9°C |
| April | 5°C | 9°C | 12°C |
| May | 8°C | 13°C | 19°C |
| June | 16°C | 22°C | 28°C |
| July | 17°C | 22°C | 27°C |
| August | 14°C | 20°C | 25°C |
| September | 11°C | 17°C | 22°C |
| October | 7°C | 11°C | 14°C |
| November | 4°C | 8°C | 11°C |
| December | 1°C | 5°C | 8°C |
Långasjön: Water Temperature by Location
Långasjön: Weather Forecast
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September 4
Location & Local Information
Långasjön in Blekinge experiences a clear seasonal variation in water temperature. During summer months the surface typically warms to about 16–22 °C (61–72 °F), and on warm spells can reach 24–25 °C (75–77 °F). In spring temperatures are cooler, often in the 4–12 °C range (39–54 °F) as the lake stratifies, while autumn sees a gradual decline to roughly 8–14 °C (46–57 °F). In winter the lake can approach freezing with surface readings near 0–4 °C (32–39 °F) and occasional ice cover in colder years. These numbers are approximate and vary with weather, depth and local inflow.
Swimming in Långasjön is generally allowed and commonly practised in warmer months because the lake has public access points and recreational shorelines. There is no general prohibition, but local rules or temporary advisories may restrict bathing for reasons such as water quality issues, blue-green algae, or maintenance. Swimmers should be mindful of colder temperatures outside summer, which increase the risk of cold-water shock and reduced endurance, and take normal safety precautions such as supervising children, using flotation when needed, and checking local notices about water quality before entering.