Ranuanjärvi — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Ranuanjärvi, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Ranuanjärvi today is 4.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters. 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 |
|---|---|---|---|
| OCT 4 | 4.8°C | 5.0°C | |
| OCT 5 | 4.7°C | 5.0°C | |
| OCT 6 | 4.5°C | 5.0°C | |
| OCT 7 | 4.5°C | 5.0°C | |
| OCT 8 | 4.6°C | 5.0°C | |
| OCT 9 | 4.4°C | 5.0°C | |
| OCT 10 | 4.0°C | 5.0°C | |
| OCT 11 | 4.4°C | 5.0°C | |
| OCT 12 | 5.0°C | 4.4°C | |
| OCT 13 | 5.0°C | 4.5°C | |
| OCT 14 | 5.0°C | 4.5°C | |
| OCT 15 | 5.0°C | 4.5°C | |
| OCT 16 | 5.0°C | 4.6°C | |
| OCT 17 | 5.0°C | 4.6°C | |
| OCT 18 | 5.0°C | 4.6°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 | 4°C |
| February | 0°C | 2°C | 4°C |
| March | 0°C | 2°C | 4°C |
| April | 0°C | 2°C | 4°C |
| May | 3°C | 8°C | 13°C |
| June | 9°C | 14°C | 20°C |
| July | 14°C | 20°C | 25°C |
| August | 12°C | 18°C | 23°C |
| September | 7°C | 12°C | 18°C |
| October | 1°C | 5°C | 8°C |
| November | 0°C | 2°C | 5°C |
| December | 0°C | 2°C | 5°C |
Ranuanjärvi: Water Temperature by Location
Ranuanjärvi: Weather Forecast
October 12
October 13
October 14
October 15
Location & Local Information
Lake Ranuanjärvi, located in southern Lapland near the town of Ranua, is a calm and clean freshwater lake surrounded by forests and low hills. Because of its northern location and moderate depth, the lake’s water temperature remains cool for most of the year but warms enough for swimming in summer. In spring, after the ice melts in May, the surface temperature is around 4–7 °C (39–45 °F). During early summer, it rises to 13–16 °C (55–61 °F), and in July, the warmest month, Ranuanjärvi typically reaches 18–20 °C (64–68 °F). On exceptionally warm days, shallow shores may reach about 21–22 °C (70–72 °F). By September, the water cools below 10 °C (50 °F), and the lake usually freezes again in late October or November.
Swimming in Ranuanjärvi is allowed and common during the summer months. The water is clear and of good quality, making it suitable for recreation. Locals and visitors swim at small beaches and piers around Ranua, especially during calm, sunny days. Although the water may feel fresh even in midsummer, it provides a pleasant and safe environment for swimming and relaxing, surrounded by the quiet beauty of Lapland’s nature.