The best time to visit Edinburgh is sometime during the months June through August when the average high temperatures rise to a balmy 65 degrees Fahrenheit.

http://en.allmetsat.com/climate/united-kingdom-ireland.php?code=03160http://www.edinburgh.org/travel/weather-climate
http://en.allmetsat.com/climate/united-kingdom-ireland.php?code=03160http://en.climate-data.org/location/3497/