Ahead of today's second practice session the air temperature is 29 degrees C, while the track temperature is 30 degrees. It is now 21:30.

Lewis Hamilton set the pace this morning, Mercedes and, of course, Red Bull, enjoying a clear advantage over their rivals, led by Lotus.

The changes to T10, which see the Singapore Sling chicane replaced by a proper turn have seen lap times drops by several seconds.

The track has been resurfaced in several places, Hamilton claiming that it is "twice as grippy" as it was in 2012.

Tyre options are medium (prime) and supersoft (option), as opposed to soft and supersoft.

There are two DRS zones. The first is on the pit straight - with activation on the approach to Turn 22, while the second runs between Turns 5 and 7 - with activation just after Turn 4.

Sutil is first out as monitors show that there is a 10 percent chance of rain during the session. Di Resta is the second driver to get to work, followed by Bottas, Ricciardo, Maldonado and Pic.

Sutil crosses the line at 51.501 but this is soon beaten by Bottas (50.057) before the Force India driver retakes the position with a 49.768.

Vettel is out surprisingly early, indeed, all but Webber, Alonso and Grosjean are on track.

Normal service resumes as Rosberg posts 48.281 to go quickest but then Vettel slams in a 46.853 having gone quickest in all three sectors. Webber and Grosjean still in their garages, the Frenchman having missed much of this morning's session due to a steering issue.

Vergne locks-up and runs wide at T7 as Rosberg is warned - as he was in FP1 - not let his tyres cool too much.

Eric Boullier is clearly very frustrated as he confirms that Grosjean is suffering a steering problem.

Hamilton goes second, 0.313s off Vettel's pace, ahead of Rosberg, Alonso and Perez.

Finally on track, Webber goes quickest in the first two sections before crossing the line at 46.489 to go quickest. Elsewhere, Button complains of a "big issue" with his fronts locking.

A 46.408 sees Vettel retake the top spot, Red Bull and Mercedes continuing the domination here. No such luck for Ferrari where both drivers are struggling, Massa doing well to keep his car out of the wall.

The Mercedes is significantly quicker than the Red Bull through the speedtrap, the Austrian team clearly making up for this - in terms of downforce - through the corners.