Hi

Does the tempreture drop in September? I am planning to come over in the end of September.

Does Dubai come to a stand still in the daytime due to Ramadhan? I want to visit the gold souk and the market behind it (that sells abayahs)

Hi from Dubai :-)

Temperatures don't drop dramatically in September, yet.
For example: today it's around 43 degrees during the day, and around 34 degrees at nighttime. Unfortunately, September is the most HUMID month of the year. This morning the northern emirates were hit with their first bad fog of the season, and it's only going to get worse.

So, September isn't so brutally hot anymore, but it's very, very sticky with humidity around 60% during the day and 95% at nighttime :-(

Ramadhan:
well, Dubai doesn't come to a complete "stand still", it's just that everything is shifted to nighttime activity!

During the day, cafes/restaurants are closed (but supermarkets are open).
Hotels will keep at least 1 indoor restaurant open for guests.
Shopping malls/the Souks open later in the day, but still serve no food/drink until after sunset.
The Museum is also closed until later in the day.
No eating-drinking allowed in public (hotel beaches are usually ok though). Also no smoking or chewing gum whilst in the car, etc.
No alcohol is served anywhere during the day.
At night, pubs/bars are open serving alcohol but no live music & no dancing.
For this purpose, nightclubs are closed for the entire month.

And remember that people may get a bit grumpy towards the end of the day, low blood sugar level or desparate for a cigarette!

It's basically best to relax during the day, and keep all of your shopping plans, etc. for after IFTAR (break of the fast) which is at sunset, approx. 6.30pm at the moment.

Driving in the emirates becomes even more dangerous during Ramadhan, especially towards the late afternoon when concentration starts to really diminish in those drivers that haven't had a drink of water or any food since early in the morning. Also, accident numbers *double* during Ramadhan, and it is highly advised to NOT drive for the hour surrounding Iftar.
Many Muslims who are still on the roads half an hour before Iftar seem to start panicking, speeding, running over red lights, etc. It's an extremely dangerous combination of speed, tiredness and impatience - so it's best to wait until 30min after Iftar and then continue your car/taxi journey.

If you come by the end of September, (by 29th) then it is Eid and the atmosphere in Dubai is very joyful and merry :-)