Lewis Hamilton says a mistake during the closing moments of Q3 cost him pole position in Canada.
Hamilton was setting similar sector times to Sebastian Vettel but ran wide at the final chicane.
"It's good to be up on the front row again but I am a little disappointed with my last lap. I was seven-tenths up going into the last corner which was really slippery and unfortunately I went straight on," he said.
"I would have lost time there anyway as it was so wet but there was a chance of pole if the lap had come together."
"Tomorrow should be a good opportunity for us though. The car felt great yesterday in the dry so we'll keep our fingers crossed that the rain stays away for the race and hopefully we can give Seb a run for his money. We've got a good car and I feel like I'm on it here so let's see what we can do tomorrow."
Team-mate Nico Rosberg will start the race from fourth place and lamented a radio issue.
"We were very quick in the difficult conditions out there this afternoon and I'm a little disappointed that I didn't qualify further up the grid," he said.
"Unfortunately my radio stopped working and communicating with my engineers is crucial in conditions like we had this afternoon. The biggest issue was not knowing that I had one more lap that was the chance to improve my time."