Ilmajoki Airport (SJY) 15 Day Weather Forecast, Seinajoki Finland
Current weather conditions and 15 day weather forecast for Ilmajoki Airport in Seinajoki, Finland including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at SJY
| 20 December 2025 Sat 6 ° C ( 42.8°F )  Overcast |
Feels Like : 2.5 ° C / 36.6°F Humidity : % 81 Pressure : 1001 mb Wind Speed : 18.4 kmph / 11.4 miles from SW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 100 |
15-day weather forecast for Ilmajoki Airport, Seinajoki, Finland
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 20 December 2025 Sat |  Patchy rain nearby |
3.6 ° C | 5.3 ° C | 4.8 ° C | % 87 | 19.4 km/h | 89% |
| 21 December 2025 Sun |  Partly Cloudy |
-0.8 ° C | 1 ° C | 0.4 ° C | % 91 | 14.8 km/h | 0% |
| 22 December 2025 Mon | Partly Cloudy |
-5.3 ° C | -1.1 ° C | -2.5 ° C | % 82 | 10.4 km/h | 0% |
| 23 December 2025 Tue |  Sunny |
-7.6 ° C | -6.6 ° C | -6.9 ° C | % 69 | 7.9 km/h | 0% |
| 24 December 2025 Wed | Partly Cloudy |
-6.8 ° C | -2.3 ° C | -3.9 ° C | % 83 | 12.6 km/h | 0% |
| 25 December 2025 Thu |  Mist |
-2.8 ° C | -1.1 ° C | -1.7 ° C | % 92 | 9.4 km/h | 0% |
| 26 December 2025 Fri | Partly Cloudy |
-1 ° C | 1.2 ° C | 0.3 ° C | % 92 | 15.5 km/h | 0% |
| 27 December 2025 Sat |  Cloudy |
-1.7 ° C | 0.8 ° C | 0 ° C | % 92 | 15.8 km/h | 0% |
| 28 December 2025 Sun | Sunny |
-5.2 ° C | -3.5 ° C | -4 ° C | % 62 | 15.5 km/h | 0% |
| 29 December 2025 Mon | Overcast |
-4.3 ° C | -1.2 ° C | -2 ° C | % 74 | 18 km/h | 0% |
| 30 December 2025 Tue |  Light snow |
-6.2 ° C | -2.7 ° C | -3.8 ° C | % 78 | 18.4 km/h | 74% |
| 31 December 2025 Wed | Overcast |
-8.5 ° C | -7.2 ° C | -7.4 ° C | % 71 | 16.2 km/h | 0% |
| 01 January 2026 Thu | Light snow |
-7.8 ° C | -6.9 ° C | -7.3 ° C | % 84 | 16.6 km/h | 61% |
| 02 January 2026 Fri |  Moderate snow |
-10.4 ° C | -6.5 ° C | -7.9 ° C | % 86 | 19.4 km/h | 60% |
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