Shelly.... I emailed PVPAM about the weather in January. She said and I quote "Weather in January is gorgeous". The first and the last day at sea will be coldest. I have a balcony and I plan to sit out on it no matter what the weather is. I'm not a pool person but my friend is.....so I don't know what "too cold" may be for the pool.
ciship, and KellySaily ......just remember the mexican riviera in the winter is not as warm as the carribean in the winter. You are looking at the high to mid 70's...maybe low 80's in PV.