If your teen is a thrill seeker, host a zip line or high ropes party for them at an adventure park or. It will definitely be a birthday they never forget. To find out more, consider the High Ropes Course at https://www.270climbing.com/high-ropes/
If you have a large outdoor space, set up a Glamping party for them to enjoy. It is the perfect mix of camping and glamour. They will love the classy tents and the hot cocoa and marshmallows they can toast.
Another great summer birthday party idea is to host a back garden movie night. You can buy a projector that uses Bluetooth off your phone and screen to do this easily. You could also set up a popcorn bar with lots of sweets too.
For a fun touch you can have them dress in costumes and act out a murder mystery. You can purchase different types of murder mystery games to match their interests.
You can also have them go for a hike. This can be done in a local nature reserve and you can even create a treasure hunt with hidden clues and a prize at the end.
Playing Capture the Flag is a fun outdoor game for teens that gets everyone moving. They can use their own old t-shirts or you can order special flags for the event.
Water guns are a must for any teenager’s birthday party. You can have them on teams and declare the least soaked team the winner. Another fun outdoor activity for a teen birthday is to have a slip n’ slide. This can be on a tarp in your back garden.