Lake Tohmajärvi — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Tohmajärvi, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Tohmajärvi today is 18.1°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 3 | 12.7°C | 17.0°C | |
| JUN 4 | 14.1°C | 17.0°C | |
| JUN 5 | 15.0°C | 17.0°C | |
| JUN 6 | 15.5°C | 17.0°C | |
| JUN 7 | 15.7°C | 17.0°C | |
| JUN 8 | 16.8°C | 17.0°C | |
| JUN 10 | 17.9°C | 17.0°C | |
| JUN 11 | 17.0°C | 18.0°C | |
| JUN 12 | 17.0°C | 18.0°C | |
| JUN 13 | 17.0°C | 17.9°C | |
| JUN 14 | 17.0°C | 17.9°C | |
| JUN 15 | 17.0°C | 17.8°C | |
| JUN 16 | 17.0°C | 17.8°C | |
| JUN 17 | 17.0°C | 17.7°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 |
Lake Tohmajärvi: Water Temperature by Location
Lake Tohmajärvi: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
While Lake Tohmajärvi shares its name with a municipality in North Karelia, the location of a lake named Tohmajärvi in the Kainuu region is less documented but exhibits typical northern Finnish lake characteristics. Swimming is generally permitted along its shores throughout the open-water season, thanks to Everyman’s Rights, which legally guarantee public access to lakes for recreational use, provided that respect for privacy and environmental protection is maintained. As with all Finnish lakes, the excellent water quality makes it a safe and refreshing place to swim during the brief summer months.
The water temperature of Tohmajärvi is highly seasonal due to its northern position. The lake is typically frozen for a long period, generally from November to April, during which time the water under the ice remains at a cold 0∘C to 4∘C. The optimal period for comfortable swimming is brief, mostly limited to July and early August. During this summer peak, the surface temperature generally warms up to range between 16∘C and 21∘C. Outside of this narrow summer window, the water is too cold for casual swimmers, appealing only to those practicing cold-water endurance or seeking a brisk post-sauna dip.