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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Reef Brief Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Helsinki’s weather is defined by sharp seasonal contrasts, with an average annual temperature of just 5.9°C. The live forecast above shows current conditions, but the key pattern is a cold, snowy winter and a mild, brief summer.
What is the typical climate for Helsinki?
Helsinki sits at a humid continental latitude, meaning winters are long, dark and cold, while summers are short and moderately warm. From December to February, average highs hover near freezing, often dipping to –5°C or lower. Snow cover is common from late November through March. The summer months of June to August bring average highs around 20–22°C, with occasional warmer spells. Spring and autumn are transitional, with rapid shifts in temperature and daylight. For a broader view of how this compares to other Australian destinations, see the Australia weather hub.
When is the best time to visit for mild weather?
The most comfortable window for outdoor activity runs from late May through early September. During this period, daily highs are pleasant and daylight stretches past 18 hours. July is typically the warmest month, with average highs near 22°C, but sea temperatures remain cool. If you are planning a trip, checking the helsinki weather 15 days forecast is a practical way to gauge conditions before packing.
Does Helsinki ever get extreme heat?
Helsinki rarely sees heatwaves. Summer temperatures occasionally climb above 30°C, but such days are uncommon and short-lived. The city’s coastal position moderates heat, keeping most summers comfortably within the 20–25°C range.
How much rain does Helsinki get in winter?
Winter is the driest season, with precipitation mostly falling as snow rather than rain. Monthly averages from December to February are around 40–50 mm, though the city often feels damp from the Baltic Sea influence. The helsinki weather february page gives a detailed breakdown of that month.
Is the weather in Helsinki similar to southern Australia?
No, it is very different. Helsinki has a true four-season climate with cold, snowy winters, while southern Australia experiences milder, wetter winters. Comparing Melbourne Weather or Sydney Weather shows how much warmer the Australian winter is.