silpol » from archive
I like how they define summer in Finland: Seasons in Finland - Ilmatieteen laitos - http://en.ilmatieteenlaitos.fi/seasons-in-finland
"In summer the mean daily temperature is consistently above 10°C. Summer usually begins in late May in southern Finland and lasts until mid-September. Summer in Lapland starts about one month later and ends a month earlier than the south coast." ‎- silpol