As someone who once upon a time worked as a bike riding mailman in Sweden, it's largely fine. :)
There's a good amount of bike lanes, and they are largely snowy in the winter rather than icy (due to not as much traffic as the main roads), or they are graveled when there is ice, so it's rare that it is too slippery (biking on snow is fine, ice can be messy). You have to go a bit slower than normal, sure, but it's hardly a problem.
Cold isnt a problem - you do fine with like a fleece down to minus 10 or so, and most places aren't colder than that very often (unless you are very far north).
Rain is the same as anywhere - no problem as long as you have some protective gear.
Thats just the winter though - summer it is perfect.
There's a good amount of bike lanes, and they are largely snowy in the winter rather than icy (due to not as much traffic as the main roads), or they are graveled when there is ice, so it's rare that it is too slippery (biking on snow is fine, ice can be messy). You have to go a bit slower than normal, sure, but it's hardly a problem.
Cold isnt a problem - you do fine with like a fleece down to minus 10 or so, and most places aren't colder than that very often (unless you are very far north).
Rain is the same as anywhere - no problem as long as you have some protective gear.
Thats just the winter though - summer it is perfect.