During World War II, Normandy was chosen as the northern France invasion site over the Pas de Calais.
This was in spite of the fact that "weather" made a landing at Normandy a very iffy proposition in 1944. The weather was "barely" good enough for a landing on D-Day, meaning that it was a 50-50 proposition. The weather was horrible at the next full moon in July, and at no later time in 1944 was the weather more suitable for a landing at Normandy
The chances of a successful landing might be described as 1) the chances of getting troops ashore times 2) the chances of maintaining a beachhead once landed. I assume that Normandy was chosen as the landing site because Allied estimates of 2), maintaining a beachhead, were much higher for Normandy. But my question relates to the role of the weather (at Pas de Calais) on the first part of the equation, the ability to get troops ashore.
Were weather conditions at Pas de Calais better, worse, or about the same as at Normandy for most of 1944?