Did the Germans face the same "weather" difficulties for an "Operation Sea Lion" as the Allies faced at Normandy?

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The Allies were fussy about the schedule for Normandy for a combination of reasons. They wanted a full moon to make night parachute drops easier, and a landing shortly after dawn with the tide half-way in. That would minimise spotting of the arriving fleet, and make the obstacles on the beach easier to see and avoid.

The tide and time-of-day conditions coincided twice a (lunar) month, one instance of which would also have a full moon. The next opportunity was 18-20 June, without the full moon, then there would have been one at the beginning of July with the full moon. But there would have been no question of putting it off until 1945. They'd have accepted less than optimal conditions first.

Operation Sealion wasn't planned in nearly so much detail, so these issues may not have emerged. The German paratroopers don't seem to have been set up for night drops, which would be rather dangerous given the unconventional single-riser parachute they used. There also weren't nearly so many obstacles on the beaches of southern England in summer 1940 as there were in France in 1944. However, the German landing craft would be much more vulnerable to bad weather and high seas. Sealion would have been dependent on good weather, the defeat of the RAF, and after that would still require Alien Space Bats to get rid of the Royal Navy.

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The Germans may have faced the "same" weather difficulties across the English Channel as the Allies, but they didn't view them the same way.

The Allied invasion of Normandy was a highly sophisticated, professional operation, the most advanced of its time. Because of that, the Allies took very much to heart even slight variations in the weather conditions, and found only a few days in the year suitable for optimal operation.

On the other hand, German plans for "Sea Lion" were "jerrybuilt" (pun intended), in the manner of Goering, assumed that they could obtain air superiority over the English Channel (perhaps not), and 2) that such superiority would adequately deter British naval action, despite evidence in Norway to the contrary. So they made only the most elementary plans for crossing the English Channel, using civilian vessels such as barges, not specialized landing craft such as the Allies' LSTs. Under those circumstances, few worried about weather conditions over the English Channel.

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