Well, we can’t say we didn’t see this coming, huh? Issue #52 of Weekly Shonen Jump magazine revealed that Hunter x Hunter is indeed going on another hiatus. It will begin next week with the magazine’s 53rd issue for the year 2018. And unfortunately, like many of the manga’s many hiatuses, we won’t know when the manga will return…
However, within that same issue, mangaka Yoshihiro Togashi did confirm that he will still so some work while on hiatus. In fact, he did say that he has already completed about 10 weeks worth of storyboards for the manga, and will be working on more as he’s “resting”. The main reason for the hiatus again would be the mangaka’s constant health problems.
Togashi has been quite infamous for his frequent hiatuses which often last for YEARS. He recently returned from another break last September after a few months hiatus. The longest hiatus he ever had lasted for almost three years.
Source: Weekly Shonen Jump issue 52