If it wouldn't be that cold in the snow...
I'm sure it's hard for warm water kiters to comprehend,
but the body heat generated snowkiting makes for very comfortable temps.
Correct gear is of course important.
Layers that breath are a must.
Goretex pants and jacket are very nice for staying dry and again for breathability.
I always have a down vest compressed in my small back pack,
for if I want to stop out there and take a break.
Big heavy gloves are not needed, most of the time,
if you core is staying warm.
I've been much colder in the spring and fall water sessions, than snowkiting.