Vantaanjoki River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Vantaanjoki River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Vantaanjoki River today is 3.9°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 |
|---|---|---|---|
| APR 11 | 2.2°C | 4.0°C | |
| APR 12 | 2.2°C | 4.0°C | |
| APR 13 | 2.5°C | 4.0°C | |
| APR 14 | 2.8°C | 4.0°C | |
| APR 15 | 2.9°C | 4.0°C | |
| APR 16 | 3.2°C | 4.0°C | |
| APR 17 | 3.3°C | 4.0°C | |
| APR 18 | 3.8°C | 4.0°C | |
| APR 19 | 4.0°C | 3.9°C | |
| APR 20 | 4.0°C | 3.9°C | |
| APR 21 | 4.0°C | 3.9°C | |
| APR 22 | 4.0°C | 3.9°C | |
| APR 23 | 4.0°C | 3.9°C | |
| APR 24 | 4.0°C | 3.9°C | |
| APR 25 | 4.0°C | 3.9°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 | 1°C | 4°C |
| February | 0°C | 1°C | 4°C |
| March | 0°C | 2°C | 5°C |
| April | 0°C | 4°C | 7°C |
| May | 5°C | 9°C | 14°C |
| June | 10°C | 15°C | 19°C |
| July | 11°C | 16°C | 20°C |
| August | 12°C | 17°C | 21°C |
| September | 9°C | 14°C | 18°C |
| October | 4°C | 8°C | 10°C |
| November | 0°C | 4°C | 7°C |
| December | 0°C | 2°C | 5°C |
Vantaanjoki River: Water Temperature by Location
Vantaanjoki River: Weather Forecast
April 19
April 20
April 21
April 22
April 23
April 24
Location & Local Information
The Vantaanjoki River flows through the Uusimaa region in southern Finland, beginning in Hausjärvi and ending in the Gulf of Finland near Helsinki. The river’s water temperature varies throughout the year depending on the weather, flow rate, and season. In spring, after the ice melts, the temperature is around 5–8 °C (41–46 °F). During early summer, it rises to 14–17 °C (57–63 °F), and in July, the warmest month, the river usually reaches 18–21 °C (64–70 °F). On very hot days, shallow areas may temporarily reach 22–23 °C (72–73 °F). In autumn, the temperature falls below 10 °C (50 °F), and during winter, many sections partly freeze or stay near 0 °C (32 °F).
Swimming in the Vantaanjoki is officially allowed in designated areas, although it is not as common as lake swimming due to varying water quality and currents. In summer, the water is generally safe for bathing, especially near maintained swimming spots such as those around Helsinki and Vantaa. The river offers opportunities for swimming, canoeing, and fishing, and during warm months, locals enjoy cooling off in its calm stretches. The Vantaanjoki remains an important natural and recreational feature in the Helsinki metropolitan area.