The fine weather also gives the Wehrmacht the opportunity to quickly subdue Denmark. Also, it presents the Italians with the opportunity to grab an undefended Malta.
Note the deployment of the BEF to the North Sea. So the invasion of Denmark must be complete, meaning that control of all hexes bordering the North Sea must be flipped to Germany in order to prevent Gort and his minions for disembarking there and throwing a monkey wrench into German plans. Fortunately for Germany, they have the units on the Danish border, which survived not being flipped during the previous allied surprise DOW impulse, to do just that. That is, flip control of all Danish hexes bordering the North Sea during the surprise impulse and thus locked out the CW from landing in Denmark.
