we don't put anything in the bath water, so it wouldn't be that..might be the temperature thing though.

ATM we're still bathing him in the baby bath in the kitchen, but if it happens again tonight I might put him in the big bath as we do have a heat/light in the bathroom.

For tonight I'll try warming his towel in the dryer. I should definately know after tomorrow's 40º temp if its likely to be that he's cold.