Assetto Corsa: How To Install SOL in 2025

SOL is one of the most popular Assetto Corsa mods, even over a decade since AC first launched. Working alongside the Custom Shaders Patch and Content Manager, SOL is a complete weather simulation mod for Assetto Corsa.

Using SOL gives you access to completely customisable weather. This includes a complete weather system overhaul for Assetto Corsa. You can create weather patterns and schedules and completely custom weather scenarios.

In this how-to guide, I’ll show you how to install SOL in Assetto Corsa, where and how to download SOL, and some recommended settings to make AC look as realistic as possible.

Should you install the SOL mod?

If you are using the Content Manager plugin and Custom Shaders Patch which can be installed directly from Content Manager, you should really look to install SOL.

SOL is completely free to download and can be installed very easily using Content Manager. It will transform the weather system, and even allow for realistic rain using the additional RainFX mod. SOL is one of the must-have mods for Assetto Corsa, as it adds a lot of realism to the game.

Below are a couple of screenshots from inside Assetto Corsa with rain enabled using the SOL weather mod.

What do you need to be able to install SOL for Assetto Corsa?

There are some requirements for installing SOL and using the custom weather effects. You’ll need a couple of other Assetto Corsa mods installed before attempting to install SOL. Ensure you have the following mods installed.

• Content Manager: This is required to use SOL, access its settings and configure weather effects.
• Custom Shaders Patch: CSP is required in order for SOL to work, and you need to be using version 1.76 or newer.

Learn how to install Content Manager for Assetto Corsa in our step-by-step installation guide.

Where can you download SOL?

To download SOL for Assetto Corsa, you will need an Overtake.gg account (Formerly RaceDepartment), which allows you to download mods. You’ll find the SOL mod on this page.

To download the latest version of SOL, simply click the download button in the top right of the screen.

Can you download older versions of SOL?

Older versions of the SOL mod, including 2.2.8, 2.2.7, and earlier, can be downloaded from the download history page. This can be useful if you are using an older version of Content Manager.

SOL version 2.2.9 was introduced to work alongside the updated version of Content Manager. If you have the latest version of CM, you should download the latest version of SOL.

How to install SOL to Assetto Corsa

Before installing SOL, read our tutorial on how to install Custom Shaders Patch into Assetto Corsa. CSP is required for SOL to work, so ensure you have it installed, as well as installing Content Manager which allows everything to fit into place.

To install SOL, follow the steps below

1. Make sure CSP and Content Manager are installed.
2. Download SOL from overtake.gg using this link.
3. With the SOL .zip folder downloaded, extract the .zip into a folder on your desktop for easy access.
4. Copy the four folders named extension, content, apps and system from the SOL folder into your Assetto Corsa root directory. This is where you installed Assetto Corsa, and it should be at the following location “Windows (C:) > Program Files (x86) > Steam >steamapps > common > assettocorsa“
   • If you get a notification to replace any files with the same name, click confirm. These may be from an older installation of SOL.

This completes the installation of SOL, but there are some settings I’d recommend changing within Content Manager to ensure it is set up correctly.

Recommended realistic SOL settings

With the SOL mod successfully installed using the tutorial above, you can open up Content Manager and change a few settings. All SOL settings can be found in the “Weather FX” menu from the Content Manager settings.

For the best SOL experience, ensure you have the following SOL settings configured in Content Manager;

• Weather style: Make sure SOL is selected from this dropdown, as this changes which system runs the weather in game. Selecting the dropdown lets you check you are using the correct version of SOL.
• Turn wipers on and off automatically: Disable this setting. With it enabled, the wipers will not react to SOL weather.
• Enable SOL Python Apps: To be able to access the SOL Planner while in Assetto Corsa, you need to enable the app functionality. This can be done by navigating to Assetto Corsa settings on the top bar, then down to “Python Apps” in the side bar. Ensure “Enable Python Apps” is selected, and then tick all SOL related apps including the Config, Custom Weather, Weather App and Planner.

How to change weather and use SOL 2.5 Planner

With SOL installed and the best settings configured, you can start to use it during races and sessions. To change the weather in SOL, head over to the “Drive” menu in Content Manager.

You can use SOL by dropping down the weather box and choosing any of the SOL 2.5 Planner options. You do need to ensure that in this dropdown, you select SOL 2.5 from the controllers submenu.

With that selected you have a few ways to configure your weather.

How to use live weather using SOL

You can choose to implement live dynamic weather by selecting the “Live” option. This option will automatically set the weather in Assetto Corsa based on the current weather conditions at the track you are racing on.

If you are racing at Silverstone, and it is currently overcast in real life. This will be represented in your race at Silverstone, and this will update at any point during the day to reflect the real-world weather.

How to choose weather using SOL 2.5 Planner

If you want control over the weather, you have three options to configure from the SOL 2.5 Planner submenu. The options you can change are;

• Start Weather: This controls the weather effects including cloud coverage, rain, haze etc at the start of your session.
• Start Wetness: The wetness will dictate how wet the track is at the start of your race session, dictating the levels of grip.
• Start Puddles: You can choose how many puddles are present at the start of your session.

How to change SOL weather in game

The settings above allow us to configure the weather settings that will be used at the start of your new session. You can also further configure SOL while in Assetto Corsa. This lets you set a complete weather schedule or adjust the weather settings to find the perfect conditions for your race.

To adjust SOL settings while in Assetto Corsa, follow our tutorial below;

1. Ensure the SOL apps are enabled from the Assetto Corsa Python Apps settings menu.
2. Load up any Assetto Corsa session from the Content Manager drive menu.
3. When in game, move your mouse to the right hand sidebar and click on SOL Planner.
4. This will open up the weather planner.
5. From inside the planner, you can choose various weather settings and also schedule dynamic weather to change the weather during your race.

If you haven’t read our guide on the best mods for Assetto Corsa, head over and read it now to discover which mods should be the first ones you install.

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Article written by Rich

Founder of SimRacingSetups.com

Rich is the founder, F1 car setup creator and content writer for SimRacingSetups. With over a decade of experience as a graphic designer, marketing director, competitive sim racer and avid motorsport fan, Rich founded SimRacingSetup.com to share his passion and knowledge of sim racing and Formula 1 with other sim racers. Regularly writes for sim racing website SimRaceReviews.com

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