Is there much difference between Sunday and Monday traffic going back to Bangkok? 

depends on the time of day.

I would suspect more on a Sunday due to day trippers.. but spread out a bit more timewise. 

I find Sunday to be the only decent day to travel in and around Bangkok and if I can plan a trip in or out of Bangkok on Sunday I will do so traffic is most definitely lighter and I'm sure this depends to some extent upon what time of day it is. With a Rama 2 fiasco continuing unabated, the only time I will drive into Bangkok is after 10:00 p.m. and the only time I will drive it out of Bangkok is before 5:30 a.m.

 

But Sundays don't seem to be as bad as the other days. 

I've always worked on the basis that the times to avoid are:

- if driving out of BKK, avoid Friday arvo & Saturday morning

- if driving in to BKK, avoid Sunday arvo & night.

Arvo ?

Was driving south on M9 / M7 on a Sunday afternoon and watched queus at a toll booth stretching over miles. 

The usual rule is:

hoards from Bangkok coming in Friday night and Saturday morning. Leaving on Sunday.

Next weekend is a long one stretching until Tue 12. Different rule.

Expect gridlock in Pattaya.

36 minutes ago, olongapo said:

Arvo ?

Too hard to work out in the context? 

 

(Oz & NZ slang for 'afternoon')

Absolutely best and fastest time to go to Bangkok is Sunday mornings. 

21 hours ago, spidermike007 said:

I find Sunday to be the only decent day to travel in and around Bangkok and if I can plan a trip in or out of Bangkok on Sunday I will do so traffic is most definitely lighter

Yes, I think it is all in Pattaya!

I was just on Sukhumvit in Jomtien , Sunday 7PM and the going back to Bangkok traffic was insane. 

Hit or miss imo.

 

I drive about 3-4000kms a month here all over thailand and there seems to be little logic to traffic congestion ( except downtown bkk ).