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 14.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| SEP 13 | 15.4°C | 16.0°C | |
| SEP 14 | 14.9°C | 16.0°C | |
| SEP 15 | 14.7°C | 16.0°C | |
| SEP 16 | 14.1°C | 16.0°C | |
| SEP 17 | 14.1°C | 16.0°C | |
| SEP 18 | 14.8°C | 16.0°C | |
| SEP 19 | 14.5°C | 16.0°C | |
| SEP 20 | 14.3°C | 16.0°C | |
| SEP 21 | 16.0°C | 14.5°C | |
| SEP 22 | 16.0°C | 14.6°C | |
| SEP 23 | 16.0°C | 14.6°C | |
| SEP 24 | 16.0°C | 14.7°C | |
| SEP 25 | 16.0°C | 14.8°C | |
| SEP 26 | 16.0°C | 14.9°C | |
| SEP 27 | 16.0°C | 15.0°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
September 21
September 22
September 23
September 24
September 25
September 26
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.