In reply to UKC News:
I think this passage in the 'about' section of the Exacta website convinces me:
'No meteorological or climate models have been used in the production of the following long-range weather forecasts. All forecasts are produced on a number of personal observations and calculations, that also include; solar activity, ocean behaviour, and historical weather patterns from my own unique collective data. This method of forecasting allows me to make a long term judgement on the factors that I consider to be the most important, and what I also consider to be the most reliable in the future for long term weather forecasting.'
So at least he's not just making it up then...