The Volkswagon Polo R driver is 16.3 seconds clear of fellow Frenchman and defending World Rally champion Sebastien Loeb, making his return after a two-race rest.
Loeb has reduced his involvement this term and appears the most likely to upset Ogier's bid for a fourth consecutive rally win.
Mikko Hirvonen remains in touch, however, after he was second fastest on the final loop to be 1.8secs behind Loeb.
The changeable weather baffled all the leading driver's on the final pass, with Ogier left to inspect a badly worn left tyre after the finish.
"I didn't hit anything, maybe in a watersplash or something," he told www.wrc.com.
"This stage was a bit dry for soft tyres, but over the loop it wasn't a bad choice. I'm happy but tired."
Loeb was left unhappy after he opted for hard tyres, only for the rain to fall.
"We had information that it would be 100 per cent clear with no rain, but that was wrong," he said.
Hirvonen had problems in his Citroen too, despite posting the second quickest time behind Ogier in the day's final run.
"The windscreen misted so I think we will lose a lot of time," he said.
"The stage was a lot worse than we thought. Hard tyres all round were probably not the best choice."
Jari-Matti Latvala battled issues with his handbrake to finsh the day 40.7secs off the pace.
"It's really annoying," he said.
"I'm not happy at the moment. I understand it (his handbrake problem) can happen, but it's difficult in hairpins when you can't use the handbrake. I'm struggling and lost a lot of time."