Fall

Autumn (or fall) in the is a season that start on September 1 and ends on November 25. In the Southern Hemisphere in, autumn starts on March 1 and ends on May 25.

Autumn consists of a mixture of clear, sunny days and some patches of rain. By November 26 / May 26, snow will begin to fall, marking the beginning of winter. In, thunderstorms will dissipate around September, giving way for regular rain.

In September / March, (specifically the 8th in ) trees will begin to turn from bright green to a dull, musky green. In October / April (the 17th in ), trees will then turn a bright orange/brown color. Grass follows the same color pattern as trees. By the end of the season, the ground, trees, and clover all change to a dull brown color. Dandelions will disappear until next summer.

Insects and rarer fish start to disappear, being replaced with cheaper fish and insects such as the Pike and Monarch butterfly, making autumn one of the more quiet seasons in the series, rivaled by winter.

In, Hardwood and Cedar Trees will produce s and s respectively, and from a short period from November 16 / May 16 to November 25 / May 25 will clutter the sky for players to catch with a net. Alongside the existing mushrooms from previous games in the, they are all used in DIY recipes.

Events
Below is a list of events during autumn, what happens during each, in which game, and when. Note that hemispheres are only accounted for in.

Nook Shopping seasonal events ()
The following is a list of events celebrated through the Nook Shopping app in.

Characters

 * Chip - A beaver who hosts the Fishing Tourney in, , and.
 * C.J. - A beaver who hosts the Fishing Tourney in.
 * Zipper - An anonymous character dressed in a rabbit costume. He gives out DIY recipes during Bunny Day.
 * Leif - In, Leif will appear more frequently during Nature Day.
 * Tom Nook - He hosts May Day in.
 * Rover - A traveling cat that appears at the end of the maze on May Day in.
 * Blathers - He hosts the stamp rally during International Museum Day in.
 * Cornimer - Appears during the Acorn Festival.
 * Jack - Appears during Halloween
 * Franklin - Appears during the Harvest Festival/Turkey Day.
 * Tortimer - The Mayor of the player's town. He hosts some events.

Critters
These are the fish and bugs that appear during autumn.

Fish

 * Angelfish
 * Arapaima
 * Arowana
 * Barbel Steed
 * Barred Knifejaw
 * Bass (Animal Crossing only)
 * Bitterling (, and  only)
 * Black Bass (, and  only)
 * Blowfish ( only)
 * Blue Marlin (, and  only)
 * Bluegill
 * Brook Trout (Animal Crossing only)
 * Butterflyfish ( and only)
 * Carp
 * Catfish
 * Char (, and  only)
 * Cherry Salmon
 * Clownfish (, and  only)
 * Crawfish
 * Crucian Carp
 * Dab (, and  only)
 * Dace
 * Dorado (, and  only)
 * Eel
 * Football Fish (, and  only)
 * Freshwater Goby
 * Gar (, and  only)
 * Giant Catfish (Animal Crossing only)
 * Goldfish
 * Guppy
 * Hammerhead Shark (, and  only)
 * Herabuna (Doubutsu no Mori only)
 * Horse Mackerel (, and  only)
 * King Salmon (, and  only)
 * Koi
 * Large Bass (Animal Crossing only)
 * Large Char (Animal Crossing only)
 * Lobster ( only)
 * Mitten Crab ( only)
 * Moray Eel ( and only)
 * Neon Tetra ( and only)
 * Nibble Fish ( only)
 * Ocean Sunfish (, and  only)
 * Octopus ( and only)
 * Olive Flounder (, and  only)
 * Pale Chub
 * Pike ( and only)
 * Piranha
 * Popeyed Goldfish
 * Puffer Fish (, and  only)
 * Rainbow Trout
 * Ray ( and only)
 * Red Snapper
 * Saddled Bichir ( only)
 * Salmon
 * Saw Shark ( only)
 * Sea Bass
 * Seahorse (, and  only)
 * Shark (, and  only)
 * Small Bass (Animal Crossing only)
 * Soft-Shelled Turtle ( only)
 * Surgeonfish ( and only)
 * Sweetfish
 * Tuna (, and  only)
 * Yellow Perch (, and  only)
 * Zebra Turkeyfish (, and  only)

Bugs

 * Agrias Butterfly (, and  only)
 * Ant
 * Bagworm (Animal Crossing, and  only)
 * Bee
 * Bell Cricket
 * Birdwing Butterfly (, and  only)
 * Centipede ( and only)
 * Cockroach (Animal Crossing and only)
 * Coconut Crab (Doubutsu no Mori e+ only)
 * Common Butterfly
 * Crab (Doubutsu no Mori e+ only
 * Cricket
 * Diving Beetle ( and only)
 * Emperor Butterfly (, and  only)
 * Flea (, and  only)
 * Fly (, and  only)
 * Fruit Beetle (, and  only)
 * Giant Petaltail ( and only)
 * Grasshopper
 * Hermit Crab (Doubutsu no Mori e+ and only)
 * House Centipede ( only
 * Lantern Fly (, and  only)
 * Long Locust
 * Mantis (Animal Crossing, and  only)
 * Migratory Locust
 * Mole Cricket
 * Monarch Butterfly (, and  only
 * Mosquito
 * Moth (, and  only
 * Oak Silk Moth (, and  only)
 * Orchid Mantis
 * Peacock Butterfly
 * Pill Bug
 * Pine Cricket (Animal Crossing only)
 * Pondskater
 * Rainbow Stag (, and  only)
 * Red Dragonfly
 * Rice Grasshopper ( only)
 * Scorpion (, and  only)
 * Snail
 * Spider
 * Stinkbug ( only)
 * Tiger Beetle ( only)
 * Tiger Butterfly
 * Violin Beetle ( and only)
 * Walker Cicada
 * Walking Leaf ( and only)
 * Walking Stick (, and  only)
 * Wharf Roach ( only)
 * Yellow Butterfly