Having worked on SEO projects for businesses in the UAE, multilingual SEO is something I always bring up early in any strategy discussion, and here's why it genuinely matters in this market.
The UAE has one of the most diverse populations in the world. Arabic is the official language but a huge portion of the population speaks English, Hindi, Urdu, Tagalog, and other languages daily. If your website only targets one language you're essentially ignoring a massive chunk of potential customers.
Arabic SEO alone is a significant opportunity most businesses miss. A large segment of UAE residents, especially Emirati nationals and Arabic speaking expats, search exclusively in Arabic. If your website has no Arabic content you simply won't show up for those searches regardless of how well optimised your English pages are. I've seen businesses unlock a completely new audience just by adding properly optimised Arabic pages.
Search behaviour is different across languages. People don't just translate their search queries word for word. An Arabic speaker searches differently than an English speaker even when looking for the same thing. Keyword research needs to be done separately for each language rather than just translating your existing keywords directly.
Google treats each language version as separate content. Using hreflang tags correctly tells Google which language version to show to which user. Without this setup your Arabic and English pages can end up competing against each other or showing to the wrong audience entirely.
For Dubai specifically, where tourism and international business is huge, having English and Arabic at minimum is important. Depending on your industry adding Hindi or Urdu can make a noticeable difference too, especially for retail, healthcare, and real estate businesses targeting South Asian expats who make up a large part of the population.
The businesses I've seen get multilingual SEO right consistently outperform competitors who only focus on English. In a market as diverse as the UAE it's not really optional if you want to reach the full potential of your audience.