Whilst it isn't the best time of year to start looking for a PhD and it's probably too late to apply for projects marked 'Funding May Be Available' if you want to start in October, universities are still adding new opportunities to FindAPhD.
Ads that come out on FindAPhD at this time of year are usually ones that were unsuccessfully advertised elsewhere earlier in the year or ones where the prospective student didn't get a good enough degree or pulled out for other reasons.
If you're looking in the arts and humanities then only a very few opportunities will be available this time of year.