Best Times to Post by Social Platform in the UK

At Comscore, we analyse billions of actions—our measure of engagement that captures the activity of the users with their reactions, comments and the content they are sharing. This measurement is conducted across major social platforms such us Facebook, Instagram, and X (formerly Twitter) in the UK. The results we analyse below reveal the days and times when audiences are, on average, most receptive—insights that help brands and publishers cut through the noise of social media content and connect more effectively.

Of course, understanding when people engage is only one layer of a broader view of the social media environment. In our new report, The State of Social 2025 – UK Edition, we dive deeper into audience social media usage, platform dynamics, and the trends shaping the UK social landscape.

Facebook:
With 40.4 million unique visitors in June 2025 and year-on-year growth of +5%, Facebook continues to play a significant role in the UK’s digital ecosystem.

On this platform, the engagement peaks, shown in the darkest colour on the heatmap below, are distributed across the week as follows:

• Monday → 10am–8pm, with a slight dip between 11am–12pm and 4pm–5pm.
• Tuesday → 12pm–1pm
• Wednesday → 3pm–4pm
• Thursday → 12pm–5pm, with a slight dip between 1pm–2pm.
• Friday → 10am–8pm, with a slight dip between 11am–12pm, 1pm–3pm and 4pm–7pm.
• Saturday → 5pm–6pm
• Sunday → No strong peaks as on other days of the week.

Source: Comscore Social, Heatmap of total actions on Facebook, UK - All, June 2025.

Instagram:
Instagram platform reached 31.9 million unique visitors in the same period, showing slight growth, +0.5% year-on-year. While the audience has stabilised, its behaviour remains distinctive.

The heatmap of this visual-first platform highlights in the darkest shade the engagement peaks, which are distributed across the week as follows:

• Monday → 12pm–8pm, with a slight dip between between 4pm–5pm.
• Tuesday → No strong peaks as on other days of the week.
• Wednesday → 9am–10am
• Thursday → 12pm–1pm and 2pm–3pm
• Friday → 7pm–8pm
• Saturday → 4pm–5pm
• Sunday → 2pm–10pm, with a slight dip between between 7pm–8pm.

Source: Comscore Social, Heatmap of total actions on Instagram, UK - All, June 2025.

X (formerly Twitter):
The microblogging platform, X, counts 21.3 million unique visitors in June 2025 and hasn’t seen audience growth over the past year, although it remains a vital platform in the UK, particularly for instant updates and real-time conversations.

The engagement peaks observed on this platform for breaking news, live events and fast-moving discussions, in the darkest shade on the heatmap below, are distributed across the week as follows:

• Monday → 10am–11am, 1pm–2pm and 6pm–7pm
• Tuesday → 2pm–4pm
• Wednesday → 9am–10am
• Thursday → 12pm–1pm, 2pm–3pm and 9pm–10pm
• Friday → 6pm–9pm
• Saturday → No strong peaks as on other days of the week.
• Sunday → 2pm–6pm and 8pm–11pm

Source: Comscore Social, Heatmap of total actions on X, UK - All, June 2025.

Timing is only one part of the equation
However, posting at peak times also means facing stronger competition for users’ attention. This is why a deeper, strategic understanding of your audience, their interests, and creating valuable content is essential.

Comscore Social helps identify these key moments and offers consistent measurement of social media consumption, keeping you up to date with changing consumer demands. To learn more about optimising your social or cross-platform strategies, contact us.