Juhannus is a celebration of the light, the midnight sun and midsummer. Originally Juhannus was celebrated in Finland as the day of Ukko, in order to ensure the harvest and fertility. Bonfires (Juhannuskokko) are very common and are burned at lakesides and by the sea.
These photos made at the seaside of Matinkylä and Haukilahti during 19-20.6. It was a sunny day, which has been replaced by foggy and cold midnight.