Mercari Japan Trending Categories
May 2026 · Top 10 categories + rising trends + what to avoid listing now
Last updated: 2026-05-27
🇯🇵 Why May is big on Mercari Japan
Golden Week (April 29–May 5) just ended — a week-long national holiday. Post-GW, people list items they sorted through during the break. Combined with 衣替え (koromogae) — Japan's biannual wardrobe changeover — May is one of the highest-volume months on Mercari.
📊 Top 10 Selling Categories — May 2026
🔥 Fastest Rising Categories
水着・プール用品 (Swimwear & Pool)
+180% vs last month
Summer approaching fast
浴衣・甚平 (Yukata & Summer Wear)
+250% vs last month
夏祭り (summer festivals) season approaching
Yukata are traditional Japanese garments worn to summer festivals (matsuri). High seasonal demand.
BBQ用品 (BBQ Gear)
+120% vs last month
Outdoor season in full swing
⚠️ Declining — Sell Now or Wait
These categories are losing value fast. Decide: discount now or hold until next season.
暖房器具 (Heaters)
-60% vs last month
Off-season. Wait until autumn or cut price to move
冬物アパレル (Winter Clothing)
-40% vs last month
Demand collapsed. Store until next season or discount heavily
スキー・スノボ用品 (Ski & Snowboard)
-70% vs last month
Completely off-season