The new section (www.hello magazine.com/horoscopes) will have daily forecasts from Monday to Friday, and a week-ahead prediction on Saturdays.
Users will be able to order online personal charts, which include a personal profile, a guide to the future and a partnership profile. In-depth forecasts are also available, as is a telephone service for the UK, Australia, Republic of Ireland and Spain.
Users will be able to find out which star sign they are most compatible with by using the Astro Love Computer.
Tree Elven, web site editor, explained: "Since the inception of hellomagazine.com, we've been looking at developing a horoscope section on the web site.
And Jonathan Cainer's popularity and profile will give our users confidence in the predictions."