Is YouTube’s TV viewership plateauing, or is it just back-to-school season?

YouTube‘s ascension on TV screens has been one of the most significant consumer tech storylines of the mid 2020s. During most months of 2024 and 2025, as measured by Nielsen‘s The Gauge report, YouTube got a larger share of TV traffic than any other content provider.

That upward trend has had far-reaching effects. YouTube’s presence on TVs has helped it reach senior citizens in greater numbers, and the platform has established itself as a “realistic destination” for consumers interested in TV shows and movies. By the time July 2025 rolled around, YouTube had pushed its share of TV traffic above 13%.

Since then, a funny thing has happened. For the first time in years, YouTube’s performance in The Gauge has seen a noticeable downturn. The platform’s percentage went from a peak of 13.4% in July to 13.1% in August. In September, that figure fell

YouTube’s TV market share is now sitting around where it was in May. The timing of the current plateau suggests that back-to-school season has a significant effect on YouTube’s performance in The Gauge. It makes perfect sense: Kids and teens watch more YouTube when they’re not busy with classes, homework, and after-school activities. Even adults pack in more watch time during summer months.

As convenient as that explanation is, it’s not without holes. During the summer of 2024, YouTube’s results in The Gauge were relatively flat. If there is a summertime peak on YouTube’s TV app, it’s a new finding for 2025.

Here’s another idea: YouTube has achieved such a high level of saturation in the United States that it may be running out of new customers who can expand its market share in The Gauge. There’s a precedent for that phenomenon: Years ago, Netflix’s customer count got so big that the streamer started accounting for subscriber losses in its quarterly earnings reports.

Having so many viewers that you don’t have more room to grow is a good problem to have, but even if YouTube continues to outpace competitors like Netflix and Disney, the narrative surrounding its success on TVs could be changing. Is the platform still an ascendant force hellbent on disrupting the traditional TV ecosystem? Or has it maxed out the gains it can make in that area? Future editions of The Gauge will tell the story, so keep an eye on Nielsen’s monthly reports if you want to see which way the winds of YouTube will blow.