We have been there both at the end of January and in October , as well as December, and will be going the end of February, and the weather is usually fairly cool in the mornings and evenings, but can be in the 70's (maybe even the 80's) during the day. It is also usually rainy at times, which cools things off as well. So unfortunately I usually pack for all seasons, but I don't bring heavy winter coats, just jackets, and layer the clothes so some can be shed during the day. Also, don't forget to bring swimsuits----the pools are all heated !!!
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And as I always say, it's never too early to pack!!!