Finland has transitioned swiftly from the extreme cold of January and February to a period where snow is rapidly melting, signaling the onset of spring. According to the Finnish Meteorological Institute, the early months of the year have been notably colder than average due to a significant high-pressure system over Northern Europe. Atlantic low-pressure systems began bringing milder air to the region only at the end of February.

The extreme cold temperatures have become rare, with only a few days in Helsinki seeing lows around -20°C. In contrast, Lapland experienced harsher conditions, measuring nearly -40°C after Epiphany. Currently, thermal spring appears to be in progress, defined as a period when average daily temperatures remain consistently above zero.

In Helsinki, this annual shift often occurs around late March; however, previous years have seen thermal spring beginning as early as February 21. This year's weather pattern showcases the variability and unpredictability of spring onset in Finland, hinting at broader climate trends affecting weather conditions.