Halloween is fast approaching, and the culture and calendar are in alignment for a landmark celebration.

For one, horror is back in a big way. From the Universal monster movies of the 1930s, the Hammer classics of the 1960s, and the US indie slashers of the 70s and 80s, to more modern franchises such as Final Destination and The Conjuring, it has always been a lucrative genre. However, 2025 is shaping up to be a big year. With films like Sinners receiving critical acclaim, and TV shows including Alien: Earth, The Walking Dead: Daryl Dixon, and Stranger Things making horror accessible all year round, screen scream culture will provide a steady stream of costume inspiration.

Perhaps more importantly, the 31st falls on a Friday this year, likely prompting more Brits to dress up and go out compared with previous years. While inflation concerns persist, recent research shows that young consumers are driving demand, and some Gen Z shoppers could splash out over £100 on costumes, sweets, and seasonal treats.

The event’s vibrant spirit and growing popularity create an ideal moment for brands to engage consumers with creative and impactful seasonal campaigns. However, ensuring these ads actually deliver on outcomes, and don’t just contribute to noise, takes the right playbook.

Harnessing the Halloween scramble

Halloween isn’t a long consideration journey: it’s a last-minute scramble. Consumers will be looking for things such as ‘spooky party snack ideas’, ‘cool costumes’, and ‘home décor’, often just weeks or even days before the event. Research this year found that among celebrators, 57% plan only a week in advance, and just 5% start months ahead. This concentrated planning window creates a simple brief for marketers: deliver the right creative in the environments that consumers are engaging in, to influence choices and drive conversion.

With the growth of AI search and retail media, many consumers will turn to these environments for inspiration. Seasonal discounts through online retailers like Amazon do well, because they hit the combination of convenience, price, and availability that consumers want. That said, the ability to deliver visually striking campaigns that are also immediately relevant to the consumer in these environments is limited. They’re also focused on the point of sale, i.e., after the intention has been formed, leaving brands at risk of missing early-stage influence. To turn Halloween into a moment that not only drives short-term conversions but also builds lifetime customer loyalty, creative and media must work together seamlessly.

The power of relevance

The human brain is hardwired to respond to information in context. Yet traditional media strategies that rely on static audience buckets often miss the nuances of behaviour and intent. The result is that campaigns appear too late, in the wrong context, or with messaging that doesn’t resonate. Forget historic behaviour - true relevance demands a deeper understanding of a user’s mindset, i.e., what people are reading and searching right now, with the ability to respond in real time.

AI provides this bridge between intent and creative execution. It can analyse both the context and content of a media placement, determining which ad visuals, headlines, and calls-to-action will resonate most with a particular shopper. AI-driven programmatic solutions also factor in placement environment, consumer behaviour, and purchase intent, including time of day, weather, trending events, or stock availability, to dynamically tailor both media and creative. Brands can leverage these capabilities to remove friction from the customer journey.

For example, instead of a one-size-fits-all hero ad, brands that use this technology can automatically swap headlines and CTAs depending on context: ‘two-minute costume fixes’ on editorial how-tos, ‘party packs for 20’ on shopping pages, or ‘order now - collect in 30 mins’ beside local store listings.

By combining dynamic creative, real-time signals, and operational intelligence, brands ensure campaigns work in lockstep to maximise impact and avoid frustrating shoppers with out-of-stock items or irrelevant messaging.

Relevance as a long-term growth engine

Halloween is fast, chaotic, and highly impulsive. When consumers are hungry for spooky purchasing ideas, it's relevance, not impressions, that decides which brands win. Advertisers who invest in the AI-powered technology capable of automatically adapting creative to what each reader is reading or searching for, whether it’s pumpkin spice or party plans, can reach shoppers at the perfect moment. Build this framework now, and what might feel like a weekend scramble can instead become a repeatable, scalable growth engine that extends well beyond Halloween.