Most people ask this wrong. "How often should I get a haircut" doesn't have one answer - it depends on what you're cutting, how fast your hair grows, and how sharp you want the lines to stay.
As a rule: short, tapered cuts with crisp lines around the ears and neck need a refresh every 2 to 4 weeks. The shorter and more precise the cut, the faster it grows out of shape - the taper softens, the neckline gets fuzzy, and the whole thing starts looking unintentional before it looks "long."
Longer cuts on top with more texture can stretch to 5 or 6 weeks, sometimes longer, because there's more length to lose before the shape actually changes. If your style depends on length and movement rather than a sharp line, you've got more room.
Beards are their own clock. A lined-up beard needs attention every 2 to 3 weeks to keep the edges sharp - the line-up is the first thing to go, even when the length barely changes.
Newfoundland weather doesn't help. Salt air, wind, and the freeze-thaw cycle we get most of the year dry out hair and skin faster than people expect, which makes regular trims and a decent beard oil routine matter more here than in a lot of places.
The simplest way to find your interval: book the next appointment on your way out the door, based on how the cut held up since the last one. If you were still happy with it at week 3, book 3. If it started looking rough at week 2, book 2. Your hair will tell you the schedule - you just have to listen to it.
Due for one? Book the cut - appointment-first, walk-ins welcome when the chair's open.