Perhonjoki River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Perhonjoki River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Perhonjoki River today is 18.6°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 |
|---|---|---|---|
| JUL 14 | 18.8°C | 17.0°C | |
| JUL 15 | 19.4°C | 17.0°C | |
| JUL 16 | 19.4°C | 17.0°C | |
| JUL 17 | 19.4°C | 17.0°C | |
| JUL 18 | 19.9°C | 17.0°C | |
| JUL 19 | 19.5°C | 17.0°C | |
| JUL 20 | 19.5°C | 17.0°C | |
| JUL 21 | 18.5°C | 17.0°C | |
| JUL 22 | 17.0°C | 18.5°C | |
| JUL 23 | 17.0°C | 18.4°C | |
| JUL 24 | 17.0°C | 18.4°C | |
| JUL 25 | 17.0°C | 18.3°C | |
| JUL 26 | 17.0°C | 18.2°C | |
| JUL 27 | 17.0°C | 18.1°C | |
| JUL 28 | 17.0°C | 18.0°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 | 1°C | 4°C |
| April | 0°C | 2°C | 5°C |
| May | 2°C | 7°C | 11°C |
| June | 9°C | 14°C | 18°C |
| July | 12°C | 17°C | 21°C |
| August | 10°C | 15°C | 19°C |
| September | 7°C | 11°C | 16°C |
| October | 3°C | 7°C | 9°C |
| November | 0°C | 2°C | 5°C |
| December | 0°C | 1°C | 4°C |
Perhonjoki River: Water Temperature by Location
Perhonjoki River: Weather Forecast
July 22
July 23
July 24
July 25
July 26
July 27
Location & Local Information
The Perhonjoki River flows through Central Ostrobothnia, originating from the lakes of Central Finland and winding toward the Gulf of Bothnia. It is a relatively narrow river with clear and cool water that reflects the changing northern climate. In spring, after the ice melts, the water remains cold at around 4–7 °C (39–45 °F). As summer progresses, the temperature rises gradually, reaching 14–17 °C (57–63 °F) in June and typically peaking at 18–21 °C (64–70 °F) in July. During heatwaves, shallow sections can momentarily warm up to 22–23 °C (72–73 °F). By autumn, the water cools below 10 °C (50 °F), and in winter the river partially freezes.
Swimming in the Perhonjoki is allowed, though it is best suited for experienced swimmers because of varying currents and water depth. In calm stretches near villages such as Perho and Veteli, locals enjoy bathing and cooling off during the warmest months. The water is clean, and the natural surroundings provide a quiet and refreshing environment. The river is also known for fishing and paddling, and during midsummer it offers pleasant opportunities for swimming in nature.