Yeah 1m or less is good conditions for easy fishing although days when it’s really really calm I’ve found the fishing isn’t the best. You can fish rougher if you’ve got a combination of a high rod stand or rod and casting a reasonable distance with at least a 5 or 6oz sinker. Usually I just check swellmap.com for swell I never take notice of the swell directions only the wind speed/direction. Generally I wouldn’t bother going out if the swell is more than 2 meters. Days when I’ve been at club competitions and the swells picked up with a hard easterly wind and everyone else packs up I can still fish with 7oz sinkers casting into the wind.