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    When does summer start in Finland?

    When summer begins and ends in the south and in Lapland.

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    Short answer

    By the meteorological definition, summer is the time when the daily mean temperature stays above 10 °C. The Finnish Meteorological Institute says it starts in late May in southern Finland and about a month later in Lapland. Autumn returns in the last week of August in the north and about a month later in the southwest.

    Weather & Seasons

    Why

    1. FMI says summer starts in late May in southern Finland and about a month later in Lapland.
    2. FMI defines thermal summer as the time when the daily mean temperature stays above 10 °C.
    3. According to FMI, autumn begins in the last week of August in northern Finland.

    Details

    Finnish school summer holidays run from early June to mid-August, and July is the main holiday month, so many city restaurants and services have summer opening hours.

    Tip

    Late June and July give the warmest weather and the longest days. August is still warm and has fewer mosquitoes in Lapland.

    What may differ

    Summer weather varies a lot. One June can be hot and another cool and rainy.

    Common misconception

    Finnish summer is only a few weeks long.

    What actually happens

    In the south, thermal summer usually lasts from late May to September, about three to four months.

    People also ask

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    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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