"I am delighted to come, especially to get the chance of some games after my injury," he says.
"West Ham is a big London club so it is perfect for me because it is a good chance to get back and have the chance to play again - so I am very happy.
"You never know what will happen; I am here on loan and we will see what happens after that."
Rami came to work on Friday morning as an Arsenal player - only to end up having a medical and racing up the motorway on Friday night to join his new team mates.
"Football changes very fast; this morning I didn't know I was going to West Ham, five minutes before I was going to training the boss told me he wanted to speak with me and said that West Ham wanted me on loan," he reveals.
"I haven't even met the lads - I am looking forward to meeting them and we will take it from there, but this is perfect for me."
Does he know there is serious competition from Steve Bywater for a place?
"Exactly; that is the way it should be at a big club like West Ham or Arsenal - at Highbury there is very good competition as well," he smiles.
As for the broken leg which hampered his progress at Arsenal, he adds:
"Yes, of course it was frustrating but I am well over the injury, which was my first major one in football.
"You have to deal with these things - and I am a stronger person for it."