hi berlin,
congrats on ur upcoming honeymoon!!
in jan, d weather in france shld still b a bit 2 cold (abt 0 - 10 degrees) 4 us singaporeans who r so used 2 d heat. however, tat's d point of visting europe in winter rite?? 2 njoy d cold. however, u dun hv 2 worry 2 much abt d cold, if u r 2 cold, then simply pop in2 any shopping centre 2 walk walk or in2 cafe 2 hv some hot coffee!!
when i was thr, i wore a longjohn beneath my turtleneck t-shirt, jeans, a coat, socks n boots. however, take note tat i m those who is super scared of hot, so u may hv 2 wear leg warmers underneath ur jeans. thus make sure tat ur jeans r slightly baggy 2 accomodate them. in addition, u can aso buy those warmers in packet form (but i can't remember d name liao), if u r 2 cold, then u can open 1 up n put inside ur coat so tat u dun feel so cold.
4 clothes, i oni bought some warmer t-shirts, jeans n a coat thr. 4 stuff like longjohns, i bought thr coz it was cheaper thr. dun hv 2 buy 2 much in sg coz it's quite ex. just get a decent coat in sg n bring along ur warmer t-shirts. u can get ur pullover thr or even a coat coz it can b very cheap when they r hving sales.
afraid tat i can't advise u on spain as i hv nvr been thr yet.
if u hv any queries, u can either post them here or pm me. take care n njoy ur hm!!