Vantaa, home to Finland’s main international airport and part of the greater Helsinki region, receives around 660 mm (about 26 inches) of rain a year, matching the broader pattern seen across southern Finland with a clear late-summer peak in convective activity. Given the airport’s central role in the country’s air travel network, sudden summer thunderstorms here carry operational significance well beyond typical daily inconvenience, since they can affect flight schedules across the wider Nordic region. Short, intense downpours remain the main hazard rather than sustained heavy rain. Because these storms can build quickly on a summer afternoon, radar tracking is a genuinely practical tool used at an operational level here. Finland’s Meteorological Institute operates the national radar network.
Learn more: How Does Rain Radar Work? · Open the full Rain Map