Hello,
Our 6 months old kitten always meowing. This is not problem at daytime, but he starts to meow in the night (mostly in dawn) loudly. He wakes up us a lot of time, sometimes we cant sleep very well.
What can we do? What do you recommend?

I haven't had this issue with my bengal kitten yet (knock on wood) but once upon a time we had a Moggie who would do this. It was remedied with one of those automatic feeders because he would be up and want breakfast before anyone else was up. Is his food/water bowl empty when you wake up?

Mine meows all the time, too, and I just thought it was the "vocal" part of being a Bengal. But, mine does sleep through most of the night. He cries mainly because he wants to go outside so badly and he can't -- at least not unless he's got on his harness.

Bengals are just overall really vocal cats.
Yours may be meowing if it's hungry, and if so, make sure to leave enough food throughout the night before you go to bed. If not, then it's likely your bengal may be getting a bit lonely and seeking some play time.
If this is happening consistently, make sure you don't respond by giving your kitten attention every time he meows. This will make him associate meowing with attention and play time, so whenever he is feeling bored he will begin to meow. Ignore him when he meows and play with him when YOU want to, not at his demand. :)

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The little monsters 3

Is he neutered?

Hello! We went through a similar stage with my bengal when he was 7 months old. He had enough food out, space to play etc etc. He would still keep us awake most of the night however when we had him neutered it almost stopped immediately. I'm not saying that the neutering stopped it, however i think it might have contibuted. For him it was just a phase, he now sleeps right through with us and we all get a good night's rest! We also bought one of those balls with holes in where u can put a treat in it and he has to figure out how to get it out... we had one on standby so the moment he started meowing we put him and the toy in another room and it would keep him occupied. We also put in a good play session before bed to tire him out.

There is quite a bit of info on this site and I'm sure you will get more advice from the readers. Hopefully its just a phase and he will grow out of it or you will be able to determine why he/shy is meowing.

have a good weeknd!