Chaz Davies feels the change in temperature between races kept him from scoring a double podium finish at Portim?o as the Welshman left Portugal with a third and fourth place finish.

Starting from the front row of the grid, Davies couldn't prevent the Kawasakis of Jonathan Rea and Tom Sykes breaking clear for their fifth consecutive one-two finish in a rain affected race one.

After getting by team-mate Davide Giugliano on the first lap, Davies was engulfed in a race long battle with Leon Haslam until the bad conditions caught the Aprilia man out.

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"Similarly to Donington, I think third was the best I could have done in race one here," said Davies. "Lap times were quick at the start and I was able to keep up with Rea and Sykes up to a certain point, but was then losing something in a couple of points of the track.

"We made a good pit-stop and I was able to hold third to the line, so I'm pleased with the result. The race was pretty wild, with very strong winds in addition to the rain."

Despite getting away with the leading trio of Giugliano, Rea and Sykes in race two, Davies was unable to hold their pace, falling back into the reaches of Haslam once more.

Although Sykes' late issues handed him fourth, Davies believes the rise in temperatures between races was to blame for the bad front tyre feel.

"The second race was difficult right from the start. We made some changes between the first and second race but I didn't have the right feeling with the front tyre, and couldn't really brake or stop my bike as I would have wanted."

With several teams staying behind to test in Portim?o on Monday, Davies is hopeful of finding a solution then.

"I think that the variation in temperature made the difference and tomorrow we will work during the tests to better understand how we can improve when temperatures rise."

The two results see Davies remain fourth in the world championship. He now sits 15 points behind Haslam in third.