japan 2007: he made a crash, till then was batlling with lewis
Good rain races: Hungary 2006, Nurburgring 2007 (mixed conditions), Korea 2010.
Mediocre/bad ones: Japan 2007, China 2007, Monaco 2008/9(?), Belgium 2010, Canada 2011 and most others I can remember.
china 2007: the mysterious tyre pressure problems
monaco 2008: he made a mistake (similar to hamilton, who still won, but for alonso that meant losing a lap)
belgium 2010: after being hit by barichello at the beginning he fougth his way through the field and crashed out, coz being to fast (hamilton also went off, and still through luck won)
canada 2011: before being kicked out by the race winner button he was long time on second place, and as already said being in front of the race winner till he kicked him out.
dont know why that should say he had a mediocre/bad race
now compare it to other so called great rain drivers: for example lewis or jenson or vettel.
pure stats tend to mislead.
Facts are despite having a strong car for most of his career he's won one proper wet race (Korea 2010, and that because Vettel retired - although it was a great drive by Alonso) and one in mixed conditions (Nurburgring 2007). That's not that impressive. He's also never had a dominant wet drive like Hamilton and Vettel have, while Button is the acknowledged master of mixed conditions.
Wet weather driving and qualifying are not Alonso's strong points. He's all right, but his biggest strength is intelligent driving and incredible consistency in race conditions.
coz they hide the circumstances behind those outcomes.
we have to add that in most rain races alonso had bad luck in comparison to others.