Mark Webber singing in rain

AUSTRALIA'S Mark Webber clocked the best time of the day at a rain-swept Barcelona yesterday.

AUSTRALIA'S Mark Webber clocked the best time of the day at a rain-swept Barcelona as the final pre-season test of the winter endured a soggy start yesterday.

The Red Bull driver timed 1min 22.693sec in the afternoon session after the morning action saw drivers tentatively tackle a Catalunya circuit made treacherous by heavy rain.

Former world champion Lewis Hamilton had been quickest in the morning but even his 1min 41.614sec, off a modest total of 43 laps in his Mercedes, was a long way off the times set at the same circuit last week.

Hamilton eventually put in 113 laps, the most of any driver, and improved his time to 1min 24.348 with France's Jean-Eric Vergne, in a Toro Rosso, the third fastest in 1:25.017.

Hamilton has now completed 2040km over five days of testing, equivalent to nearly seven grand prix distances

"The track started out really wet this morning but thankfully the conditions dried out later on and we were able to complete some proper running," said Hamilton. "It felt good to work through the race simulation this afternoon; both to get myself back in practice and to put valuable miles on the car. All the guys have done a fantastic job both here and at the factory."

Winter testing will conclude tonight ahead of the season's opening grand prix in Australia on March 17.