A braided updo like this milkmaid braid (or braid halo) is a great hairstyle for any summertime activity, whether you're on vacation at the beach all day and out all night, or going to a wedding- it will hold all day. It's perfect for hot weather because it keeps the hair off your neck and will still look good if it gets humid. A little frizz adds to the soft, boho look. :)
How to do a milkmaid braid halo:
Make a middle part going all the way down the back of your head, (make sure it's straight because it will be visible). Put your hair into two low sections, behind your ears, like you were going to do pigtails.
Pull out any pieces you want down. Braid hair into two sections. Spray. Rubberband ends.
Then flip each braid up and over to the opposite side and pin well. Make sure the braids are touching. Tuck each end into the other braid to hide the ends.
I recommend leaving a few pieces down around your face to curl them or even add ribbons to spice it up.