Kalajoki River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Kalajoki River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Kalajoki River today is 11°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used. 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 |
|---|---|---|---|
| SEP 13 | 12.4°C | 11.0°C | |
| SEP 14 | 12.2°C | 11.0°C | |
| SEP 15 | 11.8°C | 11.0°C | |
| SEP 16 | 12.0°C | 11.0°C | |
| SEP 17 | 11.1°C | 11.0°C | |
| SEP 18 | 11.3°C | 11.0°C | |
| SEP 19 | 11.0°C | 11.0°C | |
| SEP 20 | 11.1°C | 11.0°C | |
| SEP 21 | 11.0°C | 11.0°C | |
| SEP 22 | 11.0°C | 11.0°C | |
| SEP 23 | 11.0°C | 11.0°C | |
| SEP 24 | 11.0°C | 11.0°C | |
| SEP 25 | 11.0°C | 11.0°C | |
| SEP 26 | 11.0°C | 11.0°C | |
| SEP 27 | 11.0°C | 11.0°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 | 0°C | 3°C |
| February | 0°C | 0°C | 3°C |
| March | 0°C | 2°C | 5°C |
| April | 0°C | 2°C | 4°C |
| May | 1°C | 6°C | 10°C |
| June | 8°C | 12°C | 17°C |
| July | 11°C | 16°C | 20°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 | 4°C | 7°C |
| December | 0°C | 1°C | 4°C |
Kalajoki River: Water Temperature by Location
Kalajoki River: Weather Forecast
September 21
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Source:
• location Lake Reisjärvi, Reisjärvi, Finland
Mouth:
• location Bothnian Bay in Kalajoki, Finland
• coordinates 64°16′14″N 023°55′22″E
Length 130 km (81 mi)
The Kalajoki River, which flows through the town of Kalajoki in North Ostrobothnia before emptying into the Bothnian Bay, provides opportunities for freshwater swimming. Swimming is generally permitted along the accessible shores and at designated public spots, a right supported by Finland's Everyman’s Rights which ensures public access to natural waters. Due to the river's dynamic flow, particularly near its mouth and any rapids, swimmers are advised to use designated beaches where conditions and water quality are monitored for safety.
The water temperature in the Kalajoki River is very cold for most of the year. The river typically freezes over during the cold season, from approximately November to May, with the water under the ice remaining consistently near 0∘C to 4∘C. The only truly viable season for casual swimming is a short window in the summer. During the peak warm month of July, the surface temperature in the calmer sections can warm up to a range of approximately 15∘C to 19∘C. Outside of this brief period, the river’s temperature is significantly lower, primarily attracting those who participate in cold-water or winter swimming.