Iso-Naakkima Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Iso-Naakkima Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Iso-Naakkima Lake today is 18.7°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 | 17.7°C | 17.0°C | |
| JUN 24 | 17.7°C | 17.0°C | |
| JUN 25 | 17.7°C | 17.0°C | |
| JUN 26 | 17.8°C | 17.0°C | |
| JUN 27 | 18.0°C | 17.0°C | |
| JUN 28 | 18.0°C | 17.0°C | |
| JUN 29 | 18.4°C | 17.0°C | |
| JUN 30 | 18.7°C | 17.0°C | |
| JUL 1 | 20.0°C | 18.8°C | |
| JUL 2 | 20.0°C | 18.8°C | |
| JUL 3 | 20.0°C | 18.9°C | |
| JUL 4 | 20.0°C | 19.0°C | |
| JUL 5 | 20.0°C | 19.0°C | |
| JUL 6 | 20.0°C | 19.1°C | |
| JUL 7 | 20.0°C | 19.2°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 |
Iso-Naakkima Lake: Water Temperature by Location
Iso-Naakkima Lake: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Iso-Naakkima is a medium-sized lake in the South Savo region, renowned for being an astrobleme, or impact crater, which contributes to its considerable depth in parts. Swimming is widely permissible along its shores and at any local public beaches, a freedom guaranteed by Finland's Everyman’s Rights. This principle ensures the public's right to use natural water bodies for recreational purposes. The lake's deep nature and clear waters generally support good bathing conditions, and the safety and hygiene of any official beaches are monitored by local health authorities throughout the summer.
The water temperature in Iso-Naakkima follows a typical deep-lake seasonal cycle for the Finnish climate. During the long winter, from roughly December to April, the lake is reliably covered by a layer of ice, and the water temperature underneath consistently rests between 0∘C and 4∘C. The most comfortable period for swimming in the surface layer is short, peaking in July. During this mid-summer month, surface temperatures in sun-exposed bays and shallower areas typically range from 18∘C to 21∘C. However, due to the lake’s notable depth, the temperature drops rapidly beneath the warm surface layer, and outside of the summer peak, the water is too cold for casual bathers.