Very True. Maximum Totality in Iceland is 2:13, while in Spain it's 1:50, but that time of year the chance of clear skies in Iceland is less than 15%, while in Northern Spain its 40%. The chances of it being mostly cloudy or entirely overcast in mid-August is 30% in Spain vs. 65% in Iceland. I might have to rethink this.
Cloud (and other weather) data found here:
Consider the altitude of the Sun if you are planning to go to Spain. Sky may be clear but you will need a pristine horizon: http://xjubier.free....3.0&Zoom=6&LC=1
Cataluña and the Balearic islands are great holidays though.
Roberto