Weather & Track Conditions on Your Assetto Corsa Server

How to configure weather presets, dynamic track grip, tyre wear, and realism settings.

Assetto Corsa lets you control weather, track surface conditions, and simulation realism on your server.

Weather Presets

Weather is defined in server_cfg.ini with numbered sections starting from [WEATHER_0]:

[WEATHER_0]
GRAPHICS=3_clear
BASE_TEMPERATURE_AMBIENT=22
BASE_TEMPERATURE_ROAD=6

[WEATHER_1]
GRAPHICS=7_heavy_clouds
BASE_TEMPERATURE_AMBIENT=18
BASE_TEMPERATURE_ROAD=4

Available Weather Presets

GRAPHICS Value	Condition
`1_heavy_fog`	Heavy fog
`2_light_fog`	Light fog
`3_clear`	Clear skies
`4_mid_clear`	Partly clear
`5_light_clouds`	Light clouds
`6_mid_clouds`	Medium clouds
`7_heavy_clouds`	Overcast

Temperature

BASE_TEMPERATURE_AMBIENT — Air temperature in °C (affects tyre grip and engine performance)
BASE_TEMPERATURE_ROAD — Added to ambient temp to determine road surface temperature

💡 Tip: Higher road temperature = more tyre grip but faster wear. Cold conditions = less initial grip. Set appropriate temps for the car class you're running.

Multiple Weather Presets

Add as many [WEATHER_N] sections as you want. The server cycles through them during the session. Use the /next_weather admin command to advance manually.

Dynamic Track Grip

The [DYNAMIC_TRACK] section simulates rubber buildup on the track surface:

[DYNAMIC_TRACK]
SESSION_START=95        ; Grip level at session start (0-100%)
RANDOMNESS=2            ; Random variation in grip
SESSION_TRANSFER=50     ; % of grip gained that carries to the next session
LAP_GAIN=132            ; Grip gained per lap from all cars

How It Works

Track starts at SESSION_START grip level (e.g., 95%)
Every lap driven by any car adds grip based on LAP_GAIN
SESSION_TRANSFER controls how much grip carries between sessions
RANDOMNESS adds slight variation to grip levels

Recommended Settings

Server Type	SESSION_START	LAP_GAIN
Casual/Fun	`100`	`100`
Realistic	`90-95`	`130-150`
Hardcore	`85-90`	`100-120`

Realism Settings

The [REALISM] section controls simulation depth:

[REALISM]
TYRE_WEAR_RATE=100          ; 0=no wear, 100=realistic
FUEL_RATE=100               ; 0=no fuel use, 100=realistic
DAMAGE_MULTIPLIER=100       ; 0=no damage, 100=realistic
TYRE_BLANKETS_ALLOWED=0     ; 1=warm tyres at start
FORCE_VIRTUAL_MIRROR=0      ; 1=force virtual mirror on

Setting	0	100
`TYRE_WEAR_RATE`	Tyres never degrade	Realistic wear based on driving style
`FUEL_RATE`	Infinite fuel	Realistic consumption — pit stops matter
`DAMAGE_MULTIPLIER`	No mechanical/visual damage	Full damage — crashes can end your race

Assist Rules

Control which driving assists players are allowed to use:

[ASSIST_RULES]
TC_ALLOWED=1                ; 0=off, 1=factory only, 2=any
ABS_ALLOWED=1               ; 0=off, 1=factory only, 2=any
STABILITY_ALLOWED=0         ; 0=disabled, 1=enabled
AUTOCLUTCH_ALLOWED=1        ; 0=disabled, 1=enabled

Recommended for competitive servers: TC_ALLOWED=1, ABS_ALLOWED=1, STABILITY_ALLOWED=0 — factory assists only, no stability control.

Recommended for casual servers: TC_ALLOWED=2, ABS_ALLOWED=2, STABILITY_ALLOWED=1, AUTOCLUTCH_ALLOWED=1 — full assists allowed.

Time of Day

The SUN_ANGLE setting in [SERVER] controls the sun position:

Value	Approximate Time
`-80`	Early dawn
`-20`	Morning
`0`	Noon
`16`	Early afternoon
`40`	Late afternoon
`80`	Near sunset

SUN_ANGLE=16    ; ~2pm

💡 Tip: For the most realistic experience, combine dynamic track grip, full tyre wear, and realistic fuel consumption — this creates natural pit stop strategy.

Weather & Track Conditions on Your Assetto Corsa Server

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