Šešupė River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Šešupė River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Šešupė River today is 18.5°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 | 19.5°C | 18.7°C | |
| AUG 25 | 19.2°C | 18.7°C | |
| AUG 26 | 18.8°C | 18.7°C | |
| AUG 27 | 18.7°C | 18.7°C | |
| AUG 28 | 18.7°C | 18.7°C | |
| AUG 29 | 18.5°C | 18.7°C | |
| AUG 30 | 18.6°C | 18.7°C | |
| AUG 31 | 18.5°C | 18.7°C | |
| SEP 1 | 16.0°C | 18.4°C | |
| SEP 2 | 16.0°C | 18.3°C | |
| SEP 3 | 16.0°C | 18.1°C | |
| SEP 4 | 16.0°C | 18.0°C | |
| SEP 5 | 16.0°C | 17.9°C | |
| SEP 6 | 16.0°C | 17.8°C | |
| SEP 7 | 16.0°C | 17.6°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 | 4°C | 7°C |
| February | 0°C | 4°C | 7°C |
| March | 1°C | 5°C | 9°C |
| April | 5°C | 9°C | 11°C |
| May | 7°C | 13°C | 18°C |
| June | 13°C | 18°C | 23°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 19°C | 24°C |
| September | 11°C | 16°C | 20°C |
| October | 8°C | 11°C | 14°C |
| November | 3°C | 7°C | 10°C |
| December | 0°C | 3°C | 6°C |
Šešupė River: Water Temperature by Location
Šešupė River: Weather Forecast
September 1
September 2
September 3
September 4
Location & Local Information
Source:
• location 18 km north of Suwałki
Mouth:
• location Neman near Neman town
• coordinates 55°03′15″N 22°12′01″E
Length 298 km (185 mi)
The Šešupė, running through southwestern Lithuania, shows a clear seasonal cycle in water temperature. In winter the river is often near freezing, roughly 0–4 °C (32–39.2 °F), while spring sees a gradual rise to about 4–12 °C (39.2–53.6 °F). Summer is when the Šešupė is warmest, typically between 16–24 °C (60.8–75.2 °F) in most places, with shallower, slow-flowing stretches sometimes reaching the upper end of that range on hot days. In autumn temperatures fall again into the 8–14 °C (46.4–57.2 °F) band as cooling and increased rainfall change the flow and heat content.
Swimming in the Šešupė is generally possible and commonly practiced at accessible, calm stretches during the warmer months, but it is subject to local conditions and rules. Municipalities and landowners may post restrictions, and authorities monitor water quality at popular spots—swimming is discouraged or prohibited where pollution, strong currents, submerged hazards, or protected areas present safety or environmental concerns. Cold-season and ice swimming are pursued by enthusiasts but carry significant hypothermia and safety risks and require experience and precautions. In short, summer temperatures make ordinary recreational swimming feasible in many places, while winter and transitional seasons demand caution and local information before entering the water.