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 19.4°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 |
|---|---|---|---|
| AUG 4 | 20.5°C | 20.0°C | |
| AUG 5 | 20.3°C | 20.0°C | |
| AUG 6 | 20.3°C | 20.0°C | |
| AUG 7 | 20.2°C | 20.0°C | |
| AUG 8 | 19.8°C | 20.0°C | |
| AUG 9 | 19.6°C | 20.0°C | |
| AUG 10 | 19.4°C | 20.0°C | |
| AUG 11 | 19.4°C | 20.0°C | |
| AUG 12 | 20.0°C | 19.4°C | |
| AUG 13 | 20.0°C | 19.5°C | |
| AUG 14 | 20.0°C | 19.5°C | |
| AUG 15 | 20.0°C | 19.5°C | |
| AUG 16 | 20.0°C | 19.6°C | |
| AUG 17 | 20.0°C | 19.6°C | |
| AUG 18 | 20.0°C | 19.6°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 | 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
August 12
August 13
August 14
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.