enjoy the summer (if it arrives, it's not always a given in Finland)
Note to foreigners: don't take the above literally. She probably only means that some summers are too cool for summer activities like swimming in lakes or the sea. There is no such thing as no summer in Finland. There are no polar bears in Finland, either.
Shhhh, don't tell them our secrets! There are polar bears, Santa Claus is real and lives in Lapland and and and all we see in the night time is Northern Lights!