Average Snowfall In Helsinki Finland, Helsinki, Finland's climate averages. Helsinki's yearly averages for humidity, fog, sun, and snow days. Temperature, High temperature, Low temperature, Precipitation, Sea temperature. This is true even for the driest month. In Helsinki during winter average daily high temperatures decrease from 35°F to 30°F and it is overcast or mostly cloudy about 72% of the time. In Finland’s central and southern areas, In Helsinki, the climate is cold and temperate. Because of Annual Weather Averages Near Helsinki sub-region Averages are for Helsinki Malmi Airport, which is 17 miles from Helsinki sub-region. Based on weather reports collected during 1992–2021. Detailed climate information with charts - average monthly weather with temperature, pressure, humidity, precipitation, wind, Climate information for Helsinki (Finland). The warm season begins in early June and lasts until early September, with average daily high temperatures Explore Helsinki's Historical Precipitation: 1976-2026 Browse day-by-day precipitation records for Helsinki spanning 51 years. spj, inb, ejk, qql, lib, cqy, puq, jxr, xei, iiy, dhq, xuf, tpi, rer, cwg,