Mewgenics Weather Effects List: All Weather Conditions

Weather in Mewgenics changes how battles play out across entire chapters. There are 75 possible weather effects, and each one can shift tiles, spawn enemies, add status effects, or even change core elements like Fire, Water, or Ice. Some weathers start in the house hub and carry into the next chapter, while others trigger from abilities or events.

If a run suddenly feels cursed, it is probably the weather.

Weather can last for one chapter or roll into multiple chapters. It affects all units in battle, including your cats and enemies. Learning what each weather does helps you plan builds, items, and positioning before things get out of hand.

How Weather Works In Mewgenics

Weather is a global modifier. When active, it applies its effect to every battle during that chapter.

Some weathers create Persistent Elements like Water, Fire, or Ice. Others spawn hazards, enemies, or map changes. A few add status effects or stat bonuses right at the start of battle.

Weather can be triggered in 3 main ways:

Spawned in the house hub before entering a chapter
Caused by certain abilities
Triggered by specific events

Now here is the full weather list with what each one does.

Full Weather Effects List

Neutral And Accuracy Weathers

Clear Skies, no weather effects
Fog, all attacks and abilities have +10 percent chance to miss

Water Based Weathers

Rain, Persistent Water Element
Heavy Rain, Persistent Water Element, extra water tiles in every battle
Thunderstorm, Persistent Water Element, wind blows units 1 space each round, chance for random lightning strike after each turn
Flash Flood, Persistent Water Element, tons of extra water tiles
Hurricane, Persistent Water Element, wind blows units 1 space each round, 1 to 2 random tiles become water after every turn

Ice Based Weathers

Snow, Persistent Ice Element
Blizzard, Persistent Ice Element, wind blows units 1 space each round, chance for random lightning strike after each turn

Fire And Heat Weathers

Wildfire, fire everywhere
Firestorm, Persistent Fire Element, fires do not burn out, parts of map on fire
Heat Wave, cats do not Heal between battles, Healing weaker, everything Freeze Immune, staying Wet negates effects
Solar Flare, large area burns and inflicts Blind each round

Movement And Terrain Weathers

Windy, wind blows everything 1 space in random direction each round
Sandstorm, damages everything by 1 each round
Earthquake, objects destroyed, rocks everywhere
Overgrowth, extra tall grass and bramble tiles
Oil Spill, random tile becomes oil puddle each turn
Strange Spikes, Kinetic Spikes spawn every round
Minesweeper, extra land mines
Tornadoes, Twisters spawn each round
Geomagnetic Storm, rocks levitate, extra rocks spawn

Enemy And Spawn Weathers

Raining Frogs, extra neutral frogs
Fly Swarm, extra flies
Cockroach Infestation, extra cockroaches
Bird Migration, 1 to 2 extra birds
Birdemic, 2 to 4 stronger angry birds
Robot Uprising, 2 to 4 rogue robots
Alien Invasion, 2 to 4 aliens
Alien Overgrowth, strange bramble patches
Restless Dead, zombies spawn each round
Haunted Night, ghosts spawn each round
The Hollowing, corpses have 25 percent chance to revive with full HP and 5 Madness
Infestation, non tiny units explode into maggots or flies on death
Strange Eggs, 3 to 6 eggs spawn, hatch if not killed
Eruption, mini volcano spawns

Status And Stat Changing Weathers

Acid Rain, damages everything by 2 each round, chance to lower random stat
Meteornado, damages everything by 1 each round, 33 percent chance to inflict Bruise
Pandemonium, everyone starts with 5 random status effects
Blessed Day, everyone starts with +2 Shield and +2 Healing
Stealth Mission, all units gain Stealth at battle start
Firefly Swarm, all allies gain +2 Luck
Butterfly Swarm, all allies gain +2 Luck
The Shimmer, random status effect each round, cats gain random mutation after battle

Economy And Utility Weathers

Trash Day, extra junk
Pipe Blockage, extra poop and sewage
Pay Day, extra coins
Hunting Season, extra bear traps
Drug Awareness Day, extra catnip, random pill after battle
Training Day, punching bag with Kinetic Spikes 5 spawns
Bounty Hunting, random unit has bounty, Bounty Hunter spawns

Extreme And Unique Weathers

Meteor Shower, chance for flaming meteor after each turn
Judgement Day, tiles get Raptured each round, more each round
Low Gravity, jumps, throws, projectiles +2 range, projectiles ignore blocks
Crazy Weather, different weather every battle

Weather Strategy Tips

Weather can ruin a run if ignored. It can also make a build insane if you lean into it.

Bring Wet synergy during Heat Wave
Avoid corpse based builds during The Hollowing
Use ranged builds during Low Gravity
Prepare for revive loops in Restless Dead
Stack Luck during Firefly Swarm or Butterfly Swarm

Always check the current weather before planning your route. It affects tile control, status spread, and enemy density.

Final Blurb

Weather in Mewgenics can quietly shape an entire chapter or completely flip a run upside down. Some effects are minor, others turn the map into a burning tornado full of aliens and zombies. Knowing the weather ahead of time lets you adjust builds, positioning, and expectations. Sometimes you win because you played smart. Sometimes you win because Clear Skies showed up and behaved.