Seinäjoki — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Seinäjoki, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Seinäjoki 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 |
|---|---|---|---|
| AUG 11 | 18.8°C | 19.0°C | |
| AUG 12 | 18.2°C | 19.0°C | |
| AUG 13 | 18.0°C | 19.0°C | |
| AUG 14 | 17.9°C | 19.0°C | |
| AUG 15 | 17.8°C | 19.0°C | |
| AUG 16 | 18.1°C | 19.0°C | |
| AUG 17 | 18.4°C | 19.0°C | |
| AUG 18 | 18.4°C | 19.0°C | |
| AUG 19 | 19.0°C | 18.6°C | |
| AUG 20 | 19.0°C | 18.6°C | |
| AUG 21 | 19.0°C | 18.7°C | |
| AUG 22 | 19.0°C | 18.7°C | |
| AUG 23 | 19.0°C | 18.7°C | |
| AUG 24 | 19.0°C | 18.7°C | |
| AUG 25 | 19.0°C | 18.7°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 | 2°C | 5°C |
| April | 0°C | 3°C | 6°C |
| May | 6°C | 12°C | 17°C |
| June | 11°C | 16°C | 21°C |
| July | 14°C | 19°C | 24°C |
| August | 14°C | 19°C | 24°C |
| September | 10°C | 15°C | 20°C |
| October | 4°C | 8°C | 11°C |
| November | 2°C | 6°C | 9°C |
| December | 0°C | 2°C | 5°C |
Seinäjoki: Weather Forecast
August 19
August 20
August 21
August 22
August 23
August 24
Location & Local Information
Seinäjoki, located in South Ostrobothnia in western Finland, is a city shaped by the waterways that flow through its flat landscape, including the Seinäjoki River and nearby smaller lakes. These freshwater bodies experience wide seasonal temperature variations typical of Finnish inland waters. After the ice melts in late April or early May, the water temperature is about 4–7 °C (39–45 °F). As early summer progresses, it rises to 13–16 °C (55–61 °F), and in July, the warmest month, the lakes and rivers around Seinäjoki usually reach 18–22 °C (64–72 °F). Shallow and sheltered areas can briefly exceed 23 °C (73 °F). By late September, the temperature drops below 10 °C (50 °F), and the water bodies typically freeze again by November.
Swimming in Seinäjoki’s rivers and lakes is allowed and enjoyed mainly during summer. The city maintains several beaches and recreation areas, such as the Törnävä swimming spot, which provide easy access to clean water. Water quality is generally good, making it safe for bathing and family activities. While the water is cool in spring and autumn, mid-summer brings comfortable conditions for swimming, boating, and other outdoor recreation in the calm surroundings of South Ostrobothnia.