Every year, national D2C brands run "Onam Sale" campaigns in Kerala by taking their standard Diwali creative, changing the festival name, and adding a yellow-and-green colour palette. And every year, Kerala-focused brands running culturally specific Onam campaigns outperform those national campaigns by a factor of 2 to 3 on ROAS.
The reason is not that Kerala consumers are harder to reach — Kerala has some of the highest internet penetration and smartphone usage rates in India, according to the TRAI Annual Report 2024-25. The reason is that Onam is a culturally distinct festival with buying patterns that don't map onto the Diwali or Navratri templates that national advertisers default to. Running an effective Onam campaign requires understanding what Kerala consumers actually buy during Onam — and why.
What Kerala consumers buy during Onam — and why it differs from Diwali
Onam falls in August-September (Chingam in the Malayalam calendar) and celebrates the mythological return of King Mahabali to Kerala. The festival is deeply tied to the concept of a golden age of prosperity — Mahabali's reign — which shapes consumer psychology in a specific way: Onam spending is about re-creating abundance and beauty in the home, not about gift-giving or social display in the same way that Diwali is.
This manifests in the buying categories that dominate Onam spending:
Kasavu sarees and traditional Kerala clothing: The white-and-gold kasavu saree is the definitive Onam fashion purchase. This is not a generic "ethnic wear" category — it is a specific, culturally significant garment. Brands that try to substitute other ethnic wear categories during Onam underperform dramatically compared to brands offering authentic Kerala traditional clothing.
Gold jewellery: Kerala has one of the highest per-capita gold consumption rates in India (World Gold Council data consistently shows Kerala in the top states). Gold purchases — even small purchases — are central to Onam celebration. Jewellery advertising during Onam in Kerala is a high-ROAS category regardless of price point.
Home goods and home decor: The Onam sadya (the traditional feast served on a banana leaf) and the pookalam (floral rangoli) traditions create demand for home goods — banana leaf tableware, traditional serving vessels, flower arrangements, and home decor. Home categories perform 2-3x better during Onam in Kerala than in any other regional festival context.
Electronics — specifically kitchen electronics: The sadya tradition drives kitchen appliance purchases. Mixers, pressure cookers, and large-capacity cooking vessels see significant demand spikes in the two weeks before Onam. This is not a category that performs as well during Diwali in the same region.
Premium food and grocery: Onam sadya requires specific ingredients — payasam components, traditional rice varieties, specific vegetables. Premium food brands and online grocery platforms see strong Onam season performance in Kerala.
The Onam advertising calendar
Onam is a 10-day festival, with Thiruvonam (the main day) being the culmination. The advertising calendar should follow the festival arc:
Atham (Day 1, approximately 10 days before Thiruvonam): Campaign launch. Begin awareness campaigns across Facebook and Instagram. Use Malayalam-language creatives showing the pookalam tradition, sadya preparations, and family gatherings. This is the equivalent of Mahalaya for Durga Puja — the signal that the festival season has begun.
Days 2-7: Consideration campaigns. Retarget website visitors, run product-specific ads for your top Onam categories. Increase budget 1.5x above baseline.
Days 8-9 (Uthradom eve and Uthradom): Peak purchase window. Most Onam purchases — especially clothing and gold — are made during these two days before Thiruvonam. Increase budget to 3-4x baseline. Run conversion-optimised campaigns with urgency messaging: "Thiruvonam se pehle order karo" (Order before Thiruvonam) / "Thiruvonam-inu munpil order cheyyuka."
Thiruvonam: Reduce to maintenance budget. Most purchases have already been made. Run feel-good brand messaging rather than conversion campaigns — "AdsSarthi wishes you a happy Onam" type content maintains brand visibility without wasted conversion spend on a day when intent has already been fulfilled.
Malayalam creative: what works and what doesn't
Malayalam is a highly literate language in a highly literate state — Kerala's literacy rate is consistently above 94%, the highest in India. This matters for ad creative because Malayalam-speaking consumers in Kerala read ad copy carefully and respond strongly to well-written vernacular content.
Use formal Malayalam for brand copy, conversational Malayalam for CTAs: Brand statements and product descriptions should use clean, grammatically correct Malayalam. CTAs can use the more conversational register. "ഇപ്പോൾ ഓർഡർ ചെയ്യൂ" (Order now) is fine; "ഓർഡർ ചെയ്യ്!" (slang imperative) feels unprofessional to many Kerala consumers.
The Onam greeting in copy: "ഓണാശംസകൾ" (Onam Ashamsakal — Onam greetings/wishes) is the correct and universally recognised Onam greeting. Include it in your Onam ad creative. Unlike some festivals where regional greeting variations cause confusion (see the Durga Puja Shubho Bijoya vs Shubho Puja timing issue), "Onam Ashamsakal" is appropriate throughout the festival period.
Pookalam and sadya visuals are non-negotiable: The visual language of Onam creative is specific — pookalam (flower rangoli), the banana leaf sadya, the kasavu saree, the traditional Kerala home setting. Generic "celebration" visuals with no Kerala-specific context underperform dramatically. If your creative doesn't contain at least one of these visual cues, you're likely running a Diwali creative with a label change.
Avoid green and red palette: Onam's colour palette is yellow, gold, and the deep green of banana leaves and Kerala nature — not the red and gold of Diwali. The distinction matters to Kerala consumers and signals whether your brand understood the festival or just repurposed national creative.
Audience targeting for Kerala Onam campaigns
Kerala's geography and diaspora create a nuanced targeting picture:
Core Kerala targeting: Thiruvananthapuram, Kochi, Thrissur, Kozhikode, Kollam — these five urban centres account for the majority of Kerala's digital ad-responsive consumer base. Include all five in your targeting, not just Kochi.
Thrissur deserves special attention: Thrissur is the cultural capital of Kerala and the gold jewellery hub of South India. Jewellery brands running Onam campaigns should weight Thrissur targeting heavily — the per-capita gold purchase rate during Onam in Thrissur is exceptional.
Kerala diaspora — Gulf and domestic: Kerala has one of the largest diaspora populations of any Indian state, with significant NRI communities in the UAE, Saudi Arabia, Qatar, and Kuwait. For Onam, the Gulf Kerala diaspora is a high-value segment — they are buying gifts and items to send home, or planning purchases for when they visit during the festival. If your targeting capabilities extend to international audiences, Gulf-based Malayali diaspora is worth including. Domestically, Bengaluru has a large Malayali community worth targeting for Onam.
AdsSarthi Festival Intelligence for Onam
AdsSarthi's Festival Intelligence module includes Onam as one of its 35 mapped festivals, with Kerala-specific data on the buying calendar, category performance, and audience behaviour. The module handles:
- Automatic budget scaling on the Atham-to-Uthradom calendar
- Malayalam creative generation across Meta and Google formats with culturally correct visual prompts and copy
- Audience management across the awareness-to-conversion arc
- Daily WhatsApp digest in INR reporting Onam campaign ROAS against category benchmarks
For Kerala-focused brands, running a fully automated Onam campaign through AdsSarthi means spending Onam weekend with your family — watching the pookalam competition, enjoying the sadya — while your campaigns optimise and your WhatsApp shows green ROAS numbers. That's the practical value of automation built specifically for Indian festivals.