What's the climate like in France, Switzerland, Germany and Holland in August? . What kind of clothes should I take to travel?

I just got back from a trip to Europe on August 1. First of all, the temperature in France and Germany is similar. A long-sleeved shirt and a pair of jeans are enough. If it is too cold (because it often rains there, the temperature will drop), you should wear a small vest. The second is Switzerland: since it is a tourist, we must go to the famous Alps. The higher you go, the lower the temperature will be. In fact, you only need to wear short sleeves at the foot of the mountain, but because you want to go up the mountain, you have to wear a lot, probably two sweaters on your upper body and a pair of winter jeans on your lower body. Be sure to remember that you must wear sneakers and socks on your feet, otherwise it will be very cold. You can put your clothes in your backpack when it's hot down the mountain. Finally, about the Netherlands: I'm sorry I can't give you any advice, because there is not so much time on the trip, but I can tell you for sure that the Netherlands is a very charming place.

In short, bon voyage and a pleasant journey!