Rusutjarvi Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Rusutjarvi Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Rusutjarvi Lake today is 21.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| JUL 14 | 19.5°C | 19.0°C | |
| JUL 15 | 21.2°C | 19.0°C | |
| JUL 16 | 21.2°C | 19.0°C | |
| JUL 17 | 21.5°C | 19.0°C | |
| JUL 18 | 21.7°C | 19.0°C | |
| JUL 19 | 21.6°C | 19.0°C | |
| JUL 20 | 21.5°C | 19.0°C | |
| JUL 21 | 21.1°C | 19.0°C | |
| JUL 22 | 19.0°C | 21.0°C | |
| JUL 23 | 19.0°C | 20.9°C | |
| JUL 24 | 19.0°C | 20.8°C | |
| JUL 25 | 19.0°C | 20.7°C | |
| JUL 26 | 19.0°C | 20.6°C | |
| JUL 27 | 19.0°C | 20.5°C | |
| JUL 28 | 19.0°C | 20.4°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 | 2°C | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 6°C |
| April | 1°C | 5°C | 8°C |
| May | 5°C | 11°C | 17°C |
| June | 12°C | 18°C | 23°C |
| July | 13°C | 19°C | 24°C |
| August | 14°C | 20°C | 25°C |
| September | 11°C | 17°C | 22°C |
| October | 5°C | 9°C | 12°C |
| November | 1°C | 5°C | 8°C |
| December | 0°C | 3°C | 6°C |
Rusutjarvi Lake: Water Temperature by Location
Rusutjarvi Lake: Weather Forecast
July 22
July 23
July 24
July 25
July 26
July 27
Location & Local Information
Rusutjärvi is a lake in the Uusimaa region, known for its small size and use as a local swimming spot, particularly in Järvenpää. Swimming is generally permitted along the lake’s accessible shores and at any designated public beaches, a right secured by Finland's Everyman’s Rights. This principle ensures the public’s freedom to access and use natural water bodies for recreational purposes. Local municipalities monitor the water quality at official bathing sites during the summer, checking for bacteria and blue-green algae, which is crucial for a small, relatively shallow lake like Rusutjärvi to maintain safe swimming conditions.
As a smaller, shallower body of water, Rusutjärvi’s temperature is highly susceptible to weather changes. During the winter season, typically from December to April, the lake reliably develops an ice cover, with the water temperature beneath the ice staying near its maximum density, ranging from 0∘C to 4∘C. The most comfortable season for swimming is short, peaking in July. During this mid-summer period, surface water temperatures in the shallow nearshore areas can frequently reach between 20∘C and 25∘C, sometimes climbing higher during hot spells, which is characteristic of smaller lakes in Southern Finland. Outside of these warm summer months, the water is too cold for casual bathing.