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    What is the weather like in Finland in September?

    Temperatures, ruska and the start of the aurora season in September.

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    Short answer

    September is cool and colourful. Visit Finland gives typical temperatures of 8 to 15 °C in Helsinki and 0 to 10 °C in Lapland. The ruska season is under way in Lapland and arrives in the Lakeland around mid-September. Nights in the north are dark again, and the aurora season restarts.

    Weather & Seasons

    Why

    1. Visit Finland lists September temperatures of 0 to 10 °C in Lapland and 8 to 15 °C in Helsinki.
    2. Visit Finland says the aurora season restarts in September and builds through October.
    3. The Finnish Meteorological Institute says the first snow falls in September in the north.

    Details

    Autumn arrives in the north in the last week of August and in the southwest about a month later, so September feels very different across the country.

    Tip

    Combine a ruska hike in Lapland with aurora watching. Lakes are not yet frozen and often reflect the lights.

    What may differ

    Night frost is common in Lapland in September, while the south can still have warm days near 20 °C early in the month.

    Common misconception

    September is already winter in Finland.

    What actually happens

    September is autumn. Winter starts in mid-October in Lapland and later elsewhere.

    People also ask

    • Is September a good time to visit Finland?
    • Can you see northern lights in September?
    • How cold is Lapland in September?

    Sources

    This answer is for reference only. Weather varies a lot from year to year, so check the forecast of the Finnish Meteorological Institute before you travel.

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