If you want to hike in Finland in July, you need to prepare for two things. July is the hottest month in Finland, which is a blessing and a curse.
On the opposite side of the year from February is August, which is a very good month for hiking in Finland. Let's see some hiking and paddling in two national parks.
Let's forget snow and freezing temperatures for a while: let's see what Finland looks like in the opposite part of year, July. Imagine a hot day. Have you tried combining swimming and hiking?
In Finland you are allowed to go wherever you want in forests, fells, bogs and so on. You may swim, paddle or row a boat in every lake and river. You can pitch your tent almost wherever you wish. It does not matter who owns the land, the right to walk, ski, paddle, or camp is for everyone.