Feb.22 (GMM) After a few days of disrupted testing in Spain, the final week of the 2008 pre-season is also likely to be staged in inclement conditions.

Barcelona's Circuit de Catalunya, also the scene of the final group test beginning on Monday, turned on better weather on Thursday, as four teams wrapped up the penultimate session of the winter.

BMW Sauber's exclusive test at Valencia has also been disrupted by bad weather, although conditions in the eastern city had improved by Thursday afternoon.

After a damp start, McLaren on Thursday got into action for the first time this week at Barcelona.

Ferrari intends to stay at the Spanish circuit on Friday, before the major action resumes on Monday.

"The weather is still a question mark, with a mixture of sun and rain forecast," said Toyota engineer Dieter Gass.

Honda, meanwhile, intends to conclude its 2008 preparations after Barcelona with another test in early March, at Jerez.