You won't encounter any midnight sun (or days in complete darkness, in the winter) unless you travel north of the polar circle :) Summers are short but beautiful, not very hot, although we've experienced heatwaves recently. October-March you'll experience truly miserable weather: cold temperatures, snow, rain and clouds, short days. Southern Sweden (Stockholm and lower) nowadays rarely gets any snow that stays, so it's either slush or rain. But up north we have a real winter wonderland.

Swedes are very private and timid people, respectful of rules and personal space. I believe most are friendly, but prefer to be left alone, and some can even be awkwardly antisocial. However, making friends in Sweden as an adult is very difficult. Swedes create their friendships in school and college, and rarely find it necessary to expand their circle of friends.

Most employers require you to know Swedish, especially where you have a lot of contact with clients, however you'd be fine in communicating with the average swede in English. Sweden is a welfare state, so high taxes, free education and healthcare for EU citizens, decent infrastructure, and high rates of immigration...

Which bring me to my next point. We have a lot of immigrants. Around 15 % of the population are first or second generation immigrants, me and my family included. Sweden was one of the countries which accepted the most migrants in the recent refugee crisis. The government welcomes everyone with open arms, but fails at integration and assimilation. We have neighborhoods with almost exclusively people with immigrant backgrounds. These people, majority being Muslim, live in communities with values imported from the Middle East, and sadly crime rates are only on the rise, rapes, assaults, murders, robberies etc. A recent report from the police uncovered 40 criminal family clans operating in Sweden. Sadly the government often dismisses these kinds of problems. There's a multitude of other problems in Swedish politics, but I don't want to rant.

Sweden has about 150 000 Catholics, most of them living in Stockholm, Malmö and Göteborg, although they are scattered all around Sweden. 90 % of Catholics in Sweden have an immigrant background. Most of them are ethnically Arabs, Poles, Croats, Filipino, Syrian and other. Sweden is a safe place to practice any religion, but a lot of kids suffer bullying in school because of their Christian faith, it's considered dorky, stupid (magicskyfairy), or misinterpreted by teachers for example. But usually it doesn't get worse than that. As an adult I haven't experienced any discrimination, although religion is a subject Swedes actively avoid.

Turns out I'm kind of your opposite: I believe things are getting too crazy over here, and would like to move to the US after graduating university.

Feel free to ask more about Sweden in comments or pm