Best Time to Post on YouTube on Monday
Best time to post on YouTube on Monday: 3–5 PM Eastern. Secondary window: 7–9 PM Eastern. Avoid 10 AM–12 PM — engagement is the weakest of the day.
Monday is a weak publish day for long-form YouTube — the audience is in catch-up mode and CTR on new uploads runs 15–20% lower than Tuesday. If your release schedule is fixed to Monday, publish 3–5 PM ET so the video matures into Monday-night prime time. Shorts perform fine Monday evening (8–10 PM ET).