Summertime in Estonia is not cold at all, that is just a misconception. Daily temp is 20-30, can go up to 37 if really hot.
Yes Risto, you are partly right, i'am estonian and I think that here is one of the best country to live. No torrent rains, eartquakes, tsunamis etc. A lot of forests, land, pure nature. But in summertime there could be up to 37, average is ca. 15-20 C. Some last winters have been really cold and a lot of snow, summers are hot. Fortunately we have four seasons autumn, summer, fall and winter, which I see very healty:)