Sillböle bassäng Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Sillböle bassäng Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Sillböle bassäng Lake 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 23 | 16.5°C | 18.0°C | |
| JUN 24 | 16.6°C | 18.0°C | |
| JUN 25 | 16.6°C | 18.0°C | |
| JUN 26 | 16.4°C | 18.0°C | |
| JUN 27 | 16.5°C | 18.0°C | |
| JUN 28 | 16.5°C | 18.0°C | |
| JUN 29 | 17.4°C | 18.0°C | |
| JUN 30 | 17.7°C | 18.0°C | |
| JUL 1 | 19.0°C | 18.1°C | |
| JUL 2 | 19.0°C | 18.2°C | |
| JUL 3 | 19.0°C | 18.2°C | |
| JUL 4 | 19.0°C | 18.3°C | |
| JUL 5 | 19.0°C | 18.3°C | |
| JUL 6 | 19.0°C | 18.4°C | |
| JUL 7 | 19.0°C | 18.4°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 |
Sillböle bassäng Lake: Water Temperature by Location
Sillböle bassäng Lake: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Sillböle bassäng (Silvolan tekojärvi) is an artificial reservoir located in Vantaa, Uusimaa, primarily known as a component of the Helsinki metropolitan area’s water supply system, not a traditional swimming location. Due to its status as a reserve for raw drinking water, swimming is generally prohibited in the basin itself to protect water quality and public health. This restriction overrides the general provisions of Finland's Everyman’s Rights in this specific context of waterworks infrastructure. Recreational use around the basin is typically limited to walking and other activities that do not involve direct water contact.
As a reservoir in Southern Finland, its water temperature follows a distinct seasonal cycle. During the winter months, approximately from December to April, the surface of the basin is usually frozen, with the water below the ice remaining at temperatures near freezing, ranging from 0∘C to 4∘C. In the summer, the surface water temperature warms up significantly, particularly in July, often reaching a range of 18∘C to 22∘C. However, this warm temperature does not translate into swimming opportunities due to the ongoing restriction necessary for its primary function as a water source.