Hi Sean,
This year, the main concern with the snowpack here in Norway has been avalanche danger, not lack of snow.
I do not have firsthand knowledge of the conditions in Sunnmøre, but most places around the country have had more snow than normal - some more than in decades. Temperatures have now started to rise quickly and conditions could change quite a bit in a month, but I'm relatively sure there will be a lot left to enjoy in May - at least at altitude.
You can find updated snow depth here, and avalance forecast for Sunnmøre here.
Enjoy your trip!
