Basically, it can be said that there is no universal answer to this question. Because one Travel to Oman worth it all year round. Rather, it depends on what kind of weather you prefer when you go on vacation.
If you want to enjoy the sun above all, then the rainy season is not a good time to travel to Oman. On the other hand, it can get so warm during the summer months that even the hottest summer in Germany can be felt compared to how deep winter occurs.