Fascinating. Enclosed bayside micro-climates are mostly dismissed. Frankly, with recent temperatures up north of you I would rather come there to swim and play beach lizard.
But few tourists like typical weather in our area. And places like Puerto Vallarta, Boca de Iguanas, Melaque and Barra de Navidad can get damned chilly on winter evenings. See your breath around the campfire some winters.
I prefer shirt sleeve weather after sundown.
Truly affordable RV camping places are shrinking on the west coast. There are none left in the state of Quintana Roo. Ten dollars a night is not uncommon for utterly no service boondocking. I pay 66% of that for an unfurnished HOUSE including cost of all utilities.
The more expensive the RV park and surrounding restaurants and services, the less authentic things become. Mexican food is not bland whateverthehell smothered in a pound of melted cheese.
So if "more authentic Mexico" experience is high on your bucket list, now may be the time to include Michoacan and Zihuatanejo camping.
But there are always caveats. The driving or towing of a vehicle that would make a USA teenager drool with envy, is not wise. Anything MACHO is a risk. A 4WD pickup dripping with chrome and assorting bling, is not the best vehicle. Neither would be towing a prestigious sedan. To a degree this caveat is true all over Mexico.
And no, a pusher diesel or a 2018 Prowler trailer is not bait.
Come and enjoy. There's no telling when this extended cooling-off might end...