August is the main school holidays,VERY bad time to come!  They go back early Sept. Don't hold your breath for a hot summer, by the way!  It can range from unbearable heat to very chilly, that's why we have the 'cardigan'!!!! (If you don't like our weather, wait a minute.)
As for mozzies, I live on the South Coast of England, someone else can tell you about Scotland.
Andrea