So far, my round trip of Portugal seems to be finally over.
An overall of 25 days, 20 stages, 1578 km and 18360 m of cumulative climbing.
As far as weather was concerned I must say that I was lucky enough throughout all the trip except for a couple of terrible days in the between Amarante and Viana do Castelo with stretches of mountain roads transformed into dreadful torrents.
No problem at all with the traffic and with proper roads identification; sign posts indicating either places and road classification (e.g. IP,IC,EN, N, CM, etc.) were always pretty clear, nevertheless gps+velomap/osm has been essential throughout.

If you want to give a look the whole trip is now available HERE, for the time being it's in Italian only but, of course, I can always add English text or notes whether required.

Of all the 20 stages I have also the actual/recorded gps tracks (as gpx files), if anybody needs them just ask.