The monthly profit depends on so many things - on the size of a person's account, on their personality, on their knowledge, skill and experience, sometimes on sheer good or bad luck. I am not so sure there's such a thing as an average person when it comes to forex trading.
There is no right answer on this question. You can ask 10 people and you are going to get 10 different answers. How much can trader make per month will always differ depending on on many factors like: trading capital, risk management, etc.etc.
As I noticed one can make more than 10% profit easily in forex trading if he is a managed trader. After some experience this ratio can be high . If you think to make double your amount in days it is difficult. as a serious business here one should make slow and steady profits to remain save from risks of market.
I think it depends on the trader ability, knowledge, planning, investment and also the market understanding. If any person has all the qualities then surely he can earn reasonable amount but we can not share the specific amount of earning in a month, amount of profit can be different.
i wouldn't talk about averages here. some people stick to the pattern: win-lose-win-lose, so at the end they don't actually win anything. as many people stated, it depends a lot on the personality and many many other factors. then, some people trade only during one session/whole workweek, some prefer not to sleep and trade the whole day, but just once or twice a week. it's so subjective!
Forex trading result is not in fixed earning because the market also always in vary movement daily, although as trader they have plan daily target or monthly target, but in fact not easy to making target achieved all the time, sometime loss occur and we can't deny