Lahnajärvi — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lahnajärvi, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lahnajärvi today is 17.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 | 15.9°C | 18.0°C | |
| JUN 24 | 16.0°C | 18.0°C | |
| JUN 25 | 15.8°C | 18.0°C | |
| JUN 26 | 15.8°C | 18.0°C | |
| JUN 27 | 16.0°C | 18.0°C | |
| JUN 28 | 15.9°C | 18.0°C | |
| JUN 29 | 16.8°C | 18.0°C | |
| JUN 30 | 17.1°C | 18.0°C | |
| JUL 1 | 19.0°C | 17.3°C | |
| JUL 2 | 19.0°C | 17.4°C | |
| JUL 3 | 19.0°C | 17.5°C | |
| JUL 4 | 19.0°C | 17.6°C | |
| JUL 5 | 19.0°C | 17.7°C | |
| JUL 6 | 19.0°C | 17.7°C | |
| JUL 7 | 19.0°C | 17.8°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 |
Lahnajärvi: Water Temperature by Location
Lahnajärvi: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Lahnajärvi is a small, relatively shallow lake in the Southwest Finland region, historically known as a popular roadside rest area on the old Helsinki-Turku highway. Swimming is generally permitted along its shores and at designated public access points, a right secured by Finland's Everyman’s Rights. This principle grants the public the freedom to use natural water bodies for recreational use. Given its location and history as a leisure stop, the lake has accessible shores and a monitored swimming area. Water quality is maintained and checked by local authorities, ensuring it remains safe and hygienic for bathing during the summer season.
As a small, sheltered lake, Lahnajärvi is prone to heating up rapidly during warm weather but also cools down quickly. During the winter, typically from December to April, the lake is reliably frozen, with water temperatures beneath the ice layer consistently resting between 0∘C and 4∘C. The season for comfortable surface swimming is short, peaking in July. During this mid-summer month, surface temperatures in the shallow nearshore areas often range from 19∘C to 23∘C, sometimes climbing higher in exceptionally warm weather, making it one of the warmer swimming locations in the region. Outside of the brief summer peak, the water is too cool for casual swimming.