I'm going to be in Helsinki for a month in December, and Paris for a week in January. Is skating outside completely unreasonable, or is there decent indoors? If skatings not an option then what is?
if there is no snow in paris you might be able to skate but you're gonna freeze your ass off in january. if i'd be you i'd rather check out the city, visit museums, check out thrift stores and weekend markets, drink wine, go for romantic walks, boat tours, eat great food and make love to the lady than visiting an indoorpark filled with sweaty skaters you don't know.
still if you bring your thermal underwear and wanna skate you might wanna check out bercy, creteil, place italie, ivry, la defence, and le dome.
in january temperature ranges from 1 to 6 degrees.