In general, Love Island casts a mix of contestants in their twenties and early thirties, with the majority falling within the 20-30 age range. However, there have been instances where contestants in their late thirties or even forties have appeared on certain seasons.
To determine the oldest Love Island contestant of a specific season, I recommend referring to the official Love Island website, social media channels, or reputable news sources that provide detailed information on the contestants of that particular season. These sources will have the most up-to-date and accurate information on the ages of the Love Island contestants.