Hey mowgli,
That bike has HH sintered EBC pads in it (along with EBC pro-lite rotors). They dont like being cold. The combination of wet and cold will make the braking performance shithouse until they warm up (doesnt take much). I had that combination of pads/rotors because of playing on the track. Good for summer, not quite so good for winter.
If it becomes an issue for you throw in a set of organic pads next time. They work a bit better at lower temperatures.
For a demonstration, find a nice dry downhill set of tight twisties and watch the braking performance dramatically increase as they warm up.
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