If you are coming form the south: Drive north on E4 to Örnsköldsvik. After Örnsköldsvik keep driving north for about 40km. On the summer there are pretty good signs telling you where to pull over, but in the winter it is much worse.
If you are coming from the north: Drive south from Umeå. you should be driving for about 50km. Pass Nordmaling and drive another 20km.
The spot itself is a 1km long beach, after parking your car just take your boards and walk down to the sea.
This place is world-class. I surf this spot at least 30 times a year (which is a lot in sweden) and im never dissapointed. even if it is only is 1-2 feet and messy it can still be some great surf. Of course I would love it if those waves were 5 feet and clean, which it sometimes is, but even those small swells can be enough to surf.