Epoxy isn't uv resistant, so no this is a bad idea. Most clear coatings have next to no protection against uv (because they're clear). The best you can do apart from trying to find something with some uv protection is use a product that doesn't need too much physical removal
when you need to do the job again. Epoxy and polyurethane
are terrible for this as your only option is sanding
I'm having good experience with Semco teak
sealer, although I've not had it long enough to pronounce a complete win. You don't need to remove it, it assists with cleaning
, and it's super easy to apply new coats each season. It also has a little colour in it which is slightly cheating but helps with uv protection and keeps the colour up. I'm in NZ which has extreme UV levels due to ozone holes.
Disclosure: my company manufactures wood finishes, so I have some experience of this. Sadly, we don't do an exterior teak finish otherwise I'd use that