The Catalonian weather had been playing with the paddock all morning, with a shower hitting the track before Moto3, the track drying towards the end of their session only for some more spits of rain to welcome the GP boys. Only a handful of riders felt like going out on wet tyres, with most of the grid just chilling while the track got too dry for wets and too wet for slicks.
Jorge Lorenzo led in damp conditions, until the Tech 3 riders became the opening act on slick tyres, with a few more joining in with ten minutes left of the session. The only real entertainment we got meanwhile was Jack Miller repeatedly taking the wrong chicane with the F1 layout. After a wave from the world champion, a black flag and a chat with Loris Capirossi, he went back out to set a valid time just as the remaining riders finally joined the track.
Marc Marquez only put in five laps late in the session to go top and post the only time in the 1:45s, taking Cal Crutchlow with him into second position. Andrea Dovizioso posted a few extra laps to go third, six tenths down on the leader and Dani Pedrosa made a late jump into fourth, another tenth down.
Jonas Folger was one of the busiest riders of the morning, with fourteen laps, the last of which scored him a fifth position. Maverick Viñales finished the session sixth and last rider within a second of Marquez, although the Spaniard was another of the riders who only put in a handful of laps.
Sam Lowes will be happy with a seventh place only two tenths off the championship leader, the top ten completed by Alvaro Bautista, Scott Redding and Danilo Petrucci.
Despite still not being fully fit, Valentino Rossi was one of the most prolific riders of the morning session, his fifteen laps placing him seventeenth, almost three seconds down on Marquez.