It's spring in Denmark, and spring is by far my favorite season here. The wonderful white Scandinavian sunlight is back after the dark days of the winter, the flowers are coming out on the trees, and everybody's in a good mood. The outdoor cafés are full of people again – sometimes draped in blankets to keep warm, but outside all the same.
April and May are often the best months for weather in Denmark, along with September. Summers can be rainy. And April is when Tivoli opens in Copenhagen. (Side note: when you see a man in Denmark with his trousers accidentally unzipped, you say "Tivoli is open!")
Tivoli is one of the world's great non-disappointing tourist attractions – it's constantly updated, with new shops, new rides, fresh flowers and fresh restaurants. And in the spring, it's not as crowded as it is in the summer. You can hang out all day, have a picnic, ride the rollercoaster, even hear some bands play.