why is oktoberfest in september

Oktoberfest is primarily held in September because the weather in Munich during September is milder, warmer, and more suitable for an outdoor festival compared to October. Additionally, September has longer daylight hours, allowing for extended festival activities. The festival originally started in October in 1810 to celebrate a royal wedding, but organizers moved the dates earlier to September for better weather conditions and to enhance the enjoyment of the festivities. Despite the name "Oktoberfest," the majority of the celebration takes place in late September, typically ending on the first weekend of October. Also, beer brewing traditions align better with this timing, as the special Märzen beer served at Oktoberfest is brewed during the summer and ready by September for the festival.