Hello. I’m going again there for 4 months. I hold Spanish passport. What I want to do is to arrive by plane (that gives me 30 days, 1st month) and have a 30 days extension (another 30 days, 2nd month).  So, what I want to know is that if I fly out of Thailand after these 2 months and come back again (30 more days, 3rd month ), will I have any problem to extend again for another 30 days (4th month)?

Thanks in advance.

Unless you have a long history of using visa exempt entries you should not have problem doing what you plan on doing.

No problem to get another 30 day extension.

Thanks for your reply ubonjoe.  Well, I left Thailand 3 years and a half ago and I just came once last year and stayed for 20 days. So, in the last 3 years and a half I just  stayed there for 20 days. That almost assure me a 2nd 30 days extension, right? 

You will not have a problem with your history.

Immigration does not care about your previous history when doing the 30 day extensions.

Thank you ubonjoe.   ????