The answer is El Nino or potentially la Nina. A Pacific phenomenon which has made its presence felt all the way over here in the North East Atlantic. The normal weather pattern for the Pacific is shown below.
The right hand side is South America's west coast and the left hand side Asia's Pacific Rim. The moisture is heading off to Asia.
Now when the trade winds don't play ball and decide to not generate enough force it leads to hot water flooding too far south in South America and a reversal of the cycle. Hence moisture goes where it doesn't normally and visa versa. In effect the environments get the opposite of what they where designed to cope with, Jungle's drought and deserts rain.This explains the landslides etc of the central Andes this year as well as the constant cloud in Lima. El Nino.
Anyway without getting really spoddy about it, the resulting effect on the Thermal conduction belt is that a swell chart like below is the result of El Nino by the time its effects are felt here in Cornwall, UK. The low pressure systems sweep much further south rather than crossing over the top of Scotland. Hence a few weeks back my posting about the Norwegians mentioned their lack of swell, it was an El Nino effect and it screwed over the beardies for surfing.
Well as the South coast is way nicer, its beautiful coves and varied igneous rock and proliferate flora all do it for me. The fact that the Perran Pipe and Praa Sands all have classic shape right now helps.
Porthleven has had one of the best winters in History and if you see Wavelength this month and the pictures by Greg Martin and Ben Selway, you'll surely agree.