Kermajärvi — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Kermajärvi, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Kermajärvi today is 18.6°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 |
|---|---|---|---|
| JUN 23 | 17.4°C | 17.0°C | |
| JUN 24 | 17.4°C | 17.0°C | |
| JUN 25 | 17.3°C | 17.0°C | |
| JUN 26 | 17.5°C | 17.0°C | |
| JUN 27 | 17.6°C | 17.0°C | |
| JUN 28 | 17.6°C | 17.0°C | |
| JUN 29 | 18.0°C | 17.0°C | |
| JUN 30 | 18.5°C | 17.0°C | |
| JUL 1 | 20.0°C | 18.7°C | |
| JUL 2 | 20.0°C | 18.7°C | |
| JUL 3 | 20.0°C | 18.8°C | |
| JUL 4 | 20.0°C | 18.9°C | |
| JUL 5 | 20.0°C | 19.0°C | |
| JUL 6 | 20.0°C | 19.0°C | |
| JUL 7 | 20.0°C | 19.1°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 | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 2°C | 5°C |
| April | 0°C | 3°C | 6°C |
| May | 5°C | 12°C | 18°C |
| June | 11°C | 17°C | 22°C |
| July | 14°C | 20°C | 25°C |
| August | 14°C | 20°C | 25°C |
| September | 10°C | 15°C | 21°C |
| October | 4°C | 8°C | 11°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 2°C | 5°C |
Kermajärvi: Water Temperature by Location
Kermajärvi: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Lake Kermajärvi, located in South Savo in eastern Finland, is part of the Heinävesi waterway and belongs to the vast Saimaa lake system. It is a long, narrow lake surrounded by forested ridges and rocky shores, known for its clean water and calm natural setting. The water temperature in Kermajärvi follows the typical pattern of Finnish inland lakes. After the ice melts in late April or early May, the surface temperature is around 4–7 °C (39–45 °F). As the summer progresses, it rises to 13–16 °C (55–61 °F), and in July, the warmest month, the lake usually reaches 18–22 °C (64–72 °F). In shallow and sheltered bays, the water may temporarily exceed 23 °C (73 °F). By late September, it cools below 10 °C (50 °F), and the lake freezes again in November.
Swimming in Lake Kermajärvi is allowed and popular, especially during the summer. The water is clean and suitable for bathing, and the lake’s long shoreline provides many natural spots for swimming and relaxation. The quiet surroundings, clear water, and moderate summer warmth make it ideal for outdoor recreation. While the water can be cool in spring and autumn, mid-summer conditions are comfortable and refreshing for swimmers.