Welcome to low season!
I was in Telephone Bar, DJ Station and Expresso bar on both Monday & Tuesday 11-12 June and all were respectably busy... Not packed to the rafters but decent enough crowds

What places have you been going and at what times?

If you are bored with BKK, the Clubs of Pattaya (NAB & Sinlapin Issan) tend to be busy 7 nights a week... As its more of a party city than BKK... where most people have to work or study Mon-Fri
(Saying that, Pattaya is also VERY quiet at the moment!)