Of course, the Netherlands has a festival season too. Maybe you can combine a stay at the Flying Pig in Amsterdam or Noordwijk with a festival. Below the most famous ones:

Festivals

Latin Festival
With this event the organizers hope to bring the warm en exotic latin sound to larger audiences. This is surely the largest latin festival in Europa, with national and international superstars coming from all corners of the world.
Latin Festival Pinkpop
Europe's oldest pop festival is still one of the best. Pinkpop annually attracts around 60,000 people to Megaland in Landgraaf. It’s always in the weekend of Pentecost.
Pinkpop Amsterdam Roots Festival
The Amsterdam Roots Festival has a long history of great artists, innovating collaborations and an ever-increasing number of visitors. The festival has grown into one of the most fascinating music festivals in the Netherlands.
Amsterdam Roots Festival Awakenings Festival
A techno festival by daylight! The location is ‘Spaarnwoude’, the famous nature reserve where Dance Valley is held too. Quality!
Awakenings Festival Dance Valley Festival
Dance Valley is the biggest open-air dance music festival in Holland and the best in Europe. Each year 50,000 clubbers descend on the rolling countryside of an idyllic nature reserve just outside Amsterdam, the Spaarnwoude Recreation Ground, for a party to remember.
Dance Valley Festival 5 Days Off
5 Days Off is the leading Amsterdam-style festival of electronic music and related art forms, spread over the best clubs of the city.
5 Days Off North Sea Jazz Festival
The biggest jazz festival in the world! Just about every genre is represented there – from traditional New Orleans jazz, swing, bop and free jazz to fusion, avant-garde jazz and electronic jazz.
North Sea Jazz Festival Pleasure Island
This magical festival is usually held at the NDSM-dock in Amsterdam North. Big shows, impressive decors and sensual themes. Fairy-tale world is the inspiration and top DJ’s will spin the decks!
Pleasure Island Amsterdam Pride
Amsterdam Pride is one of the biggest gay and lesbian festivals in Europe. The Dutch gay community is renowned for going overboard during Pride weekend and, as always, visitors can see the world-famous Canal Parade, a fantastic floating display of around 80 garishly decorated boats bursting with music and colour.
Amsterdam Pride De Parade
This is a traveling theatre festival that develops new ideas, opens worlds and creates opportunities. It’s in a really nice park in Amsterdam South and it’s also a great spot to drink rose wine without even going to one of the stage plays.
De Parade Lowlands Festival
Three days party with the best alternative music, street theatre, movies, stand-up comedy, visual arts, literature, multimedia, and so on.
Lowlands Festival Uitmarkt Amsterdam
Amsterdam is a hive of cultural activity and the Uitmarkt is a fine example of the city's artistic temperament. At the end of August, the new season of culture commences with shows on outdoor and indoor stages next to the ‘IJ’, behind Central Station.
Uitmarkt Amsterdam

Kite Board Open
Also at Pentecost: Europe’s biggest beach event of the year. Do not miss this one....with the best kiteboarders of the world, free lessons, a bikini contest, beer, party and much more! And it’s only a few steps away of the Flying Pig Beach.
Kite Board Open Sensation Black & White
This famous indoor dance event has 2 editions; the most popular is ‘White’ edition with ‘light’ house music. It’s always a sold out very quick, so maybe you should focus on the ‘Black’ edition; this music is much harder, like hardtrance, early rave, hardstyle and hardcore.
Sensation Black & White Queensday
If you happen to be in Amsterdam on April 30th, you’re VERY lucky. Because on this day the entire country celebrates the queens mum's birthday and  everybody goes mad in orange.  Amsterdam is the epic center of it all.