Fall

Autumn, also known as fall, in the starts on September 1st and ends on November 30th. In the Southern Hemisphere in, autumn starts on March 1st and ends on May 31st. During autumn, the trees begin to change color to an orange-brown and the grass frequently change color and turns dull. 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.

Events
Below is a list of events found in autumn. It contains what happens in each event, what game the event happens in and when the event happens.
 * Flea Market - and
 * First Saturday of every month in or Fourth Sunday of every month in
 * Players can visit villager's homes and buy selected items of furniture. Likewise, villagers can visit the player's house and buy items from them, at a price set by the player.


 * Fishing Tourney -, , and
 * Second or Third Saturday or Sunday (depends on game) of September, October, and November
 * Chip (or Tortimer in ) the fishing ace will set up a stall in the Plaza and will challenge the villagers of the town to catch the biggest fish (either overall or a specific type of fish). The competition ends at 6:00 PM, whereupon the winner will receive a trophy. A notice will also be put up on the bulletin board announcing the winner.


 * Fishing Tourney -
 * Second Saturday of October (Northern Hemisphere) or Second Saturday of April (Southern Hemisphere)
 * C.J. will ask players to catch as many fishes as possible within a 3 minute time range, setting up a cooler where any fishes a player gets will be stored immediately. There's a fee of 500 Bells per run, but during online play the fee is waivered. The competition lasts from 9:00 AM to 6:00 PM, of which after a certain point threshold the players will receive a trophy in their mailbox. Players can also redeem points for "fish swag".


 * Bunny Day - (only in the Southern Hemisphere)
 * A Sunday in March or April
 * Bunny Day is what is in place of Easter, where Zipper appears outside Residential Services. Eggs appear around town and players can collect them and use them for DIY recipes. Bunny Day is celebrated in the preceding 11 days before the day of Easter and has a different date per year.


 * Nature Day - (only in the Southern Hemisphere)
 * April 23rd to May 4th
 * In, Nature Day is celebrated via special Nook Miles+ objectives that earn 5x the miles from completing. Leif also appears more frequently than ever.


 * Mother's Day - (only in the Southern Hemisphere)
 * May
 * In, Nook Shopping will allow the player to purchase a Thank-you-mom mug.


 * May Day - (only in the Southern Hemisphere)
 * May 1st to May 7th
 * Tom Nook will invite the player to go on a special island tour where they must solve a maze in order to reach Rover for a special prize.


 * International Museum Day - (only in the Southern Hemisphere)
 * May 18th to May 31st
 * Blathers will host a stamp rally in the bug, fish, and fossil exhibits. The players must find three stamp stations that changes locations each day in each bug, fish, and fossil rooms in order to earn a prize from Blathers.


 * Labor Day -, and
 * First Monday in September
 * In, the player can talk to Tortimer near the Wishing Well to receive a Shop Model. In , the player will instead receive the Picnic Basket from the mayor outside the Town Hall.


 * La-Di-Day -
 * Second Saturday in September and November
 * On this day, the player can hear villagers' suggestions for a new town tune. After the tune is sung to the player, they can decide whether or not they want it saved as the town's new melody.


 * Sports Fair -
 * September 23rd to September 24th
 * Players and villagers compete against each other in for different events - Aerobics, Foot Race, Ball Toss and Tug-o-War.


 * Yay Day -
 * Fourth Sunday in September and November
 * Villagers swap compliments with the player, and may refer to them infrequently after the event.


 * Explorer's Day -, and )
 * October 12th
 * The mayor will be near the Wishing Well to reward the player a Bottled Ship in . In the player will instead receive the Sailboat Model from Tortimer outside the Town Hall. In  Isabelle will be standing in the plaza waiting to give the player a Sailboat Model.  In addition to this there will be a cutout for player to pose with.


 * Acorn Festival -
 * Second week in October
 * Cornimer will be outside Town Hall, exchanging Mushroom furniture for acorns.


 * Halloween -, , and  (only in the Northern Hemisphere)
 * October 31st
 * Jack will appear between 6:00 PM and 1:00 AM (or between 5:00 PM and 12:00 AM in ). During this time, players can play trick or treat with the villagers or earn Spooky Furniture by offering candy to Jack.


 * Harvest Festival -, and
 * Fourth Thursday of November
 * Franklin the Turkey will be hiding somewhere in town. Tortimer sets up some tables and food outside the Wishing Well or Town Hall  to celebrate.  In, Franklin will appear in the plaza and request that player collects four ingredients so that he can create a dish.  Upon receiving the ingredients he will present the player with a piece of furniture.


 * Mushroom Season -, , and
 * All of November (or May in the Southern Hemisphere in )
 * Five ( and ) or six mushrooms will appear every day next to trees. One will be a piece from the Mushroom Series. The others can be sold to Tom Nook or Re-Tail, given to Wendell in, or eaten by the player. In , players can use all five mushroom variants in DIY recipes pertaining to the Mushroom Set.

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.
 * Tortimer - The Mayor of the player's town. He hosts some events.

Fish and bugs
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

Weather
The weather in autumn consists of a mixture of clear, sunny days and some patches of rain. Snow will begin to fall towards the end of November, but will not stick to the ground until early December, in winter. In, thunderstorms will dissipate around September, giving way for regular rain.

In September, (specifically the 8th in ) trees will begin to turn from bright green to a dull, musky green. In October (the 17th in ), trees will then turn a bright orange/brown color. Grass follows the same color pattern as trees, by turning a dull green color in September, then a dull purple in October. In November, the grass becomes a very dull pinkish-gray, and then in December, the ground, weeds, and clover all turn gray. Dandelions will disappear until next summer. The trees will often gradually change color.