I'm considering going to one or more of the Scandinavian countries soon, perhaps Denmark.
Denkmark is the kingdom of denmark and looks like a really cold and fascinating state!
The temperature is acceptable for me, but a large reason is that Denmark is among the top in the World Happiness Index.
Yes that is true. Did you consider that their Quality of Life or general wellbeing of their society is also very high?
Again, that is one of the larger factors. Scandinavian countries all have good statistics in that area. 
Yes. What do you think about Finland and Iceland that are considered part of Scandinavia.
I do not know much about Finland, but I do think Iceland is interesting. Especially considering the old tale of its name being switched with Greenland.
History of Greenland
The first humans are thought to have arrived in Greenland around 2500 BC. Their descendants apparently died out and were succeeded by several other groups migrating from continental North America. There has been no evidence discovered that Greenland was known to Europeans until the 10th century, when Icelandic Vikings settled on its southwestern coast, which seems to have been uninhabited when they arrived. The ancestors of the Inuit Greenlanders who live there today appear to have migrated there later, around AD 1200, from northwestern Greenland. While the Inuit
World Happiness Report 2018", with Finland and Norway taking the top spots.
- The Nordic countries received the highest ranking for protecting workers rights on the International Trade Union Confederation's 2014 Global Rights Index, with Denmark being the only nation to receive a perfect score.
- Sweden at 56.6% of GDP, Denmark at 51.7% and Finland at 48.6% reflect very high public spending. One key reason for public spending is the large number of public employees. These employees work in various fields including education, healthcare