September marks a major seasonal transition for Animal Crossing: New Horizons, bringing immersive fall vibes to Northern Hemisphere islands and mild spring scenery to Southern Hemisphere players. The 2026 ACNH September and fall update packs a full lineup of limited-time seasonal events, exclusive DIY recipes, rotating island environmental changes, and brand-new official merchandise releases.
ACNH September & Fall Seasonal Weather & Island Changes
The Animal Crossing fall season officially kicks off on September 1 for all Northern Hemisphere islands and lasts until November 25, while Southern Hemisphere islands enter their spring shopping and growth season starting the same day. The overall island weather becomes milder compared to summer, with a mix of clear sunny days and occasional light rain, and frequent summer thunderstorms completely fade away.
Visible landscape changes unfold gradually throughout the fall months. At the start of September, island grass, regular trees, and weeds shift from bright summer green to a softer, muted dark green tone. As fall progresses into its second month, foliage turns warm orange and yellow hues. By late fall, most tree leaves (excluding cedar trees) fade to reddish-brown, paving the way for the upcoming winter snowfall.
Island flora also follows a fixed blooming schedule in September. Northern Hemisphere hibiscus and plumeria bushes stop blooming entirely on September 20. Right after that, on September 21, tea olive bushes begin their blooming period, adding new seasonal greenery and scenery features to the island. For Southern Hemisphere players, camellia bushes finish their blooming season on September 30.
Wildlife and aquatic life also see obvious rotations. Rare summer insects and fish gradually disappear in September, replaced by common fall species such as monarch butterflies and pikes. Northern Hemisphere players can also start collecting seasonal crafting materials: hardwood trees drop acorns, and cedar trees yield pine cones starting September 1. In late fall, floating maple leaves will appear in the sky, which players can catch with a net for exclusive DIY crafts. Traditional in-game mushrooms also return as seasonal collectibles for fall crafting projects.
ACNH September 2026 Events
September features four core seasonal events, including month-long celebrations and short-term cultural festivals, plus the final Bug-Off competition of the year for Northern Hemisphere users. All events are official Nook Shopping seasonal activities with fixed time windows and exclusive themed rewards.
1. Grape Harvest Festival (September 1 – September 30, Worldwide)
Inspired by traditional grape harvest celebrations across Spain, France, Germany, and Italy, this month-long global event runs throughout the entire September. It centers on harvest-themed parades and traditional festive customs. The only exclusive item for this event is the Grape-Harvest Basket, which players can purchase via the Nook Shopping seasonal tab to decorate their islands with authentic European harvest festival vibes.
2. Moon-Viewing Day (September 16 – September 25, Worldwide)
A global seasonal event based on the traditional East Asian mid-autumn moon appreciation custom. Rooted in the lunisolar calendar’s eighth lunar month full moon tradition, the event celebrates the brightest and clearest harvest moon of the year. Players can grab three exclusive decorative and commemorative items from Nook Shopping during this period: Dango, Moon Cakes, and the Moon Rug, all designed to recreate the classic moon-viewing festive atmosphere.
3. Chuseok Festival (September 16 – September 25, Worldwide)
Running parallel to Moon-Viewing Day, this event honors South Korea’s traditional Chuseok harvest holiday, a time for family reunions and ancestor worship. The sole exclusive item for this event is Songpyeon, a type of steamed rice cake stuffed with fillings and cooked on pine needles, serving as a traditional festival delicacy and decorative item for players’ islands.
Notably, Moon-Viewing Day and Chuseok are both derivative events of the series’ classic Autumn Moon festival, replacing the former fixed in-game festival with flexible Nook Shopping seasonal content for players worldwide to enjoy.
4. Northern Hemisphere Final Bug-Off (September 26)
September hosts the last Bug-Off competition of 2026 for all Northern Hemisphere islands. This annual bug-catching event offers players a final chance to collect exclusive bug-themed reward items before winter arrives. The event features a full set of unique furniture, clothing, and decorative items that cannot be obtained at other times of the year.
ACNH September 2026 New DIY Recipes & Seasonal Event Items
1. New Fall DIY Recipes (Northern Hemisphere, September 1)
Starting on September 1, Northern Hemisphere players unlock a full set of brand-new DIY crafting recipes that use acorns and pine cones as core materials. These seasonal recipes are exclusive to the fall season, allowing players to craft a variety of warm, fall-themed furniture and decorations to match their island’s autumn scenery. The required acorn and pine cone materials can be obtained by shaking hardwood and cedar trees respectively throughout September, October, and early November.
2. Full List of September Exclusive Event Items
All limited items are only available during their corresponding event windows and will be removed from Nook Shopping once the events end:
Grape Harvest Festival: Grape-Harvest Basket
Moon-Viewing Day: Dango, Moon Cakes, Moon Rug
Chuseok Festival: Songpyeon
September Bug-Off Exclusive Rewards: Artisanal Bug Cage, Bug Aloha Shirt, Bug Cage, Bug Wand, Butterflies Wall, Butterfly Backpack, Ladybug Rug, Ladybug Umbrella, Spider Doorplate, Spider Web, Termite Mound, Toy Centipede, Toy Cockroach
ACNH 2026 September New Merchandise Release
Beyond in-game updates, Nintendo and Bandai Namco launched a new official ACNH physical merchandise line for September 2026, marking fresh peripheral content for the game’s 25th anniversary celebration. The new product series includes two types of flocked plush doll collections, currently available for purchase only in Japan.
1. Standard Tomodachi Dolls
This collection features 10 classic popular ACNH villagers and characters: Isabelle, Tom Nook, Timmy, Tommy, K.K. Slider, Judy, Cha-Cha, Julian, Jack, and Flurry. Each plush doll is priced at 500 yen (550 yen including tax, roughly 3.5 USD per piece), with shipping and international import fees not included in the base price.
2. Premium Friend Dolls
As an upgraded premium version of the flocked plush series, each doll in this line costs 5,500 yen (approximately 35 USD). Similar to the standard dolls, they are currently Japan-exclusive products. Given the global popularity of Animal Crossing, there is high potential for a future international release in the US and other regions.
2026 marks the 25th anniversary of the Animal Crossing franchise, which debuted on the Japanese N64 console. While the series gained massive global popularity with New Horizons in 2020, Nintendo continues to support the game with ongoing free updates and official merchandise launches instead of halting post-launch content. Fans are widely anticipating a new franchise installment for the Switch 2 console, and the 2026 September fall update and new plush products are part of Nintendo’s continuous franchise operation plans.
