Here are some outdoor summer party decoration ideas:

1. Light up your outdoor space with creative lighting ¹.
2. Use outdoor rugs to define seating areas ¹.
3. Take the indoors outdoors by bringing indoor furniture and decor outside ¹.
4. Decorate with shade, such as umbrellas or canopies ¹.
5. Utilize water features for a refreshing touch ¹.
6. Create a party backdrop for photo opportunities ¹.
7. Add a touch of elegance with fresh flowers ¹.
8. Coordinate patterns in linens and other decor elements ².
9. Consider tenting for larger gatherings ².
10. Decorate your fence with banners or garlands ².
11. Use water features like fountains or pools ².
12. Create a fairytale atmosphere with whimsical decor ².
13. Keep it simple with minimalistic decor ².