Merkys River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Merkys River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Merkys River today is 19.6°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 4 | 20.1°C | 18.0°C | |
| AUG 5 | 20.1°C | 18.0°C | |
| AUG 6 | 20.1°C | 18.0°C | |
| AUG 7 | 20.4°C | 18.0°C | |
| AUG 8 | 20.9°C | 18.0°C | |
| AUG 9 | 21.2°C | 18.0°C | |
| AUG 10 | 20.6°C | 18.0°C | |
| AUG 11 | 19.8°C | 18.0°C | |
| AUG 12 | 18.0°C | 19.5°C | |
| AUG 13 | 18.0°C | 19.4°C | |
| AUG 14 | 18.0°C | 19.4°C | |
| AUG 15 | 18.0°C | 19.3°C | |
| AUG 16 | 18.0°C | 19.2°C | |
| AUG 17 | 18.0°C | 19.1°C | |
| AUG 18 | 18.0°C | 19.0°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 | 6°C | 12°C | 18°C |
| June | 13°C | 18°C | 22°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 11°C | 16°C | 20°C |
| October | 8°C | 11°C | 14°C |
| November | 2°C | 7°C | 10°C |
| December | 0°C | 3°C | 6°C |
Merkys River: Water Temperature by Location
Merkys River: Weather Forecast
August 12
August 13
August 14
August 15
August 16
August 17
Location & Local Information
Source:
• location 18 km (11 mi) southwest from Ašmiany, Belarus
• elevation 136 m (446 ft)
Mouth Neman
• location near Merkinė
• coordinates 54°09′23″N 24°11′07″E
Length 213 km (132 mi)
The Merkys is a lowland river in southeastern Lithuania whose water temperature varies strongly with the seasons. In winter months (December–February) surface temperatures commonly sit around 0–4 °C (32–39 °F) and the river can be partially or fully ice-covered. During spring (March–May) the warming trend brings temperatures roughly to 4–12 °C (39–54 °F) as snowmelt and rains increase flow. In summer (June–August) the Merkys is at its warmest, often between about 16–24 °C (61–75 °F) and in warm spells can reach around 25 °C (77 °F). Autumn (September–November) sees cooling waters, typically in the 8–14 °C (46–57 °F) range as air temperatures fall and daylight shortens.
Swimming in the Merkys is commonly practiced in summer and is generally allowed because there are no widespread legal bans on recreational bathing in the river; people swim at informal spots near towns and clear stretches. However, conditions vary locally: the current can be faster in some reaches, depths and submerged obstacles change with weather, and water quality may fluctuate after heavy rain or runoff. There are relatively few supervised or officially monitored beaches on the river, so swimmers are advised to choose calm, well-known sites, observe local signage, and take normal open-water precautions for safety and hygiene.