Kymijoki River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Kymijoki River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Kymijoki River today is 13.1°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 | 14.1°C | 14.0°C | |
| SEP 14 | 13.8°C | 14.0°C | |
| SEP 15 | 13.9°C | 14.0°C | |
| SEP 16 | 14.0°C | 14.0°C | |
| SEP 17 | 13.6°C | 14.0°C | |
| SEP 18 | 12.7°C | 14.0°C | |
| SEP 19 | 13.5°C | 14.0°C | |
| SEP 20 | 12.7°C | 14.0°C | |
| SEP 21 | 14.0°C | 13.1°C | |
| SEP 22 | 14.0°C | 13.2°C | |
| SEP 23 | 14.0°C | 13.2°C | |
| SEP 24 | 14.0°C | 13.3°C | |
| SEP 25 | 14.0°C | 13.3°C | |
| SEP 26 | 14.0°C | 13.4°C | |
| SEP 27 | 14.0°C | 13.4°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 | 1°C | 4°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 2°C | 5°C |
| April | 0°C | 4°C | 7°C |
| May | 5°C | 10°C | 14°C |
| June | 10°C | 15°C | 19°C |
| July | 11°C | 16°C | 22°C |
| August | 12°C | 17°C | 21°C |
| September | 9°C | 14°C | 18°C |
| October | 4°C | 8°C | 10°C |
| November | 0°C | 4°C | 7°C |
| December | 0°C | 2°C | 5°C |
Kymijoki River: Water Temperature by Location
Kymijoki River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source:
• location Päijänne
• elevation 78.2 m (257 ft)
Mouth:
• location Baltic Sea
Length 204 km (127 mi)
The Kymijoki River, known as Kymmene älv in Swedish, discharges into the Gulf of Finland in the Uusimaa region. Swimming is generally permitted in the river's quieter and designated sections, guided by the Finnish Everyman’s Rights. This principle grants the public the right to access water bodies for recreation, provided they respect private property and the environment. However, due to the river’s significant current and the presence of rapids, swimmers must be extremely cautious, and public swimming is often limited to specific, monitored locations where the flow is safe.
As a major water system in Southern Finland, the Kymijoki's water temperature is seasonal but also influenced by upstream regulation. During the winter, from roughly December to April, the river is generally either ice-covered or maintains a cold temperature between 0∘C and 4∘C. The season for comfortable swimming is brief, peaking in July and early August. In these summer months, the surface temperature typically warms up to a range of 18∘C to 22∘C in slow-moving areas. Outside of this warm period, the water is cool, mainly appealing to cold-water enthusiasts.