I love wearing sandals in the Summer, or going barefoot as much as possible. Unfortunately, my arches do not appreciate this so much... and each year that I get older, my feet appreciate it less and less!
I also see a lot of clients with foot pain. Plantar fasciitis is a common issue that shows up on my table.
There's a few things you can do to help support your feet.
Of course, good shoes are important. I've recently discovered some awesome sandals (thanks, Chris!) that allow me to wear Summer flip flops while still getting decent support. Switching to these have actually eliminated the foot pain I was experiencing this Summer from wearing crappy sandals: Oofos. They are fantastic and I highly recommend them.
Another foot care regimen I follow is using yoga toes as much as I can. I try to wear these every evening for an hour or so. These are great for helping treat things like:
Plus they feel good!
If you're dealing with plantar fasciitis pain, I recommend taking a bottle of water and freezing it on it's side. Then roll your feet over the frozen bottle to massage all those achy spots. Hang out a little longer at the areas that are more tender. The ice is good for the inflammation of the plantar fasciitis, while massaging to loosen up adhesions.
Here's a helpful video with some exercises to help plantar fasciitis.