The website traffic needed to reach $1,000.00 per month will depend entirely on how you plan to make $1,000.00 per month.
If you're looking to make $1,000.00 per month through Google Adsense advertisements then you will likely need at least 3,000 daily unique visitors to reach $1,000.00 per month.
The amount you get paid for each Adsense click will also vary from day to day and depends on what niche your website is in.
Some niches pay higher per click through Adsense than others.
If you're selling your own E Book or product or service then you might make $1,000.00 per month with only 1,000 daily unique visitors if those unique visitors are targeted visitors interested in what your website is about.