Can I extend my visa with a passport that has just under 6 months until expiration?

okay lets sort out the TOTALLY FALSE misconception that the O/P has and that is that he needs 6 months left on his passport to get another extension 🙁

The rule is you need 6 months on your passport at most thai consulates in other countries to BUY A VISA.

There is no amount of time you need left on your passport to get an extension once you're INSIDE the country. IF for some reason your passport was expiring before the total number of days you'd get on an extension you'd just get stamped until the expiration date of the passport.

You have SIX months left on a passport and you want to get a 60 DAY extension, you're fine.

Go apply for another 60 day covid extension and you'll be fine while you wait for your new passport to show up

You are at the moment at Covid Extension (Based on unable to travel) and you like to get another one based on applying for a new passport?

You better have a plan B as your passport is valid and can be used to travel back home.

The 6 month thing is only relevant when entering the country. If your passport is valid when you go for an extension, they will stamp you in up until the expiration date of the passport, but you don't need 6 months left to apply for an extension.