Planning a trip to Jodhpur and Jaisalmer spanning about 5-6 days in late Dec and early Jan. Should we pack enough winter clothes or is it gonna be hot during the day when we will be out and about? Thanks!

Planning a trip to Jodhpur and Jaisalmer spanning about 5-6 days in late Dec and early Jan. Should we pack enough winter clothes or is it gonna be hot during the day when we will be out and about? Thanks!