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Assetto Corsa » Assetto Corsa: How To Get Realistic Rain With RainFX in 2025
Follow our step-by-step guide on enabling realistic rain physics in Assetto Corsa using the RainFX mod. Includes all mod download links and installation instructions.
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Assetto Corsa is a game that allows a huge variety of customisation due to the number of mods available. Mods such as Custom Shaders Patch give the 10 year old game a complete visual overhaul. A variety of new cars are available from modders such as RaceSimStudio. And a combination of SOL and RainFX deliver realistic weather effects.
Together, these mods allow Assetto Corsa to compete with much newer sim racing games. One of the biggest overhauls you can make to Assetto Corsa is adding realistic rain effects, which is something that the game doesn’t include as standard.
In this guide, I’m going to show you our step-by-step tutorial on how to enable realistic rain in Assetto Corsa using a variety of mods, including RainFX.
To enable realistic rain in Assetto Corsa, you do need a few mods. Most of the mods are free to download and incredibly easy to install. I’ll run through a tutorial on how to install each of these mods and where to download them from this guide.
The only premium mod you need to purchase is the premium version of Custom Shaders Patch, which is available for just $1 on the creator’s Patreon (Ilja Jusupov).
Below are all of the mods you need to enable rain in Assetto Corsa.
As mentioned above, each of these mods (other than the RainFx version of CSP) are free to download. Below are links on where to download each mod.
Mod | What it does | Price | Download link |
---|---|---|---|
Content Manager | Replaces the Assetto Corsa launcher. | Free | AssettoCorsa.club |
CSP | A complete graphics and physics overhaul. | Free | acstuff.ru |
SOL | Custom weather systems and effects. | Free | Overtake.gg |
RainFX | Enables physical rain particles and effects. | $1 | Patreon |
The first mod to download is Content Manager, and this creates a brand new launcher for Assetto Corsa. With Content Manager installed you won’t ever have to use the dated AC launcher or menu system. You can start races and change all settings directly from the Content Manager dashboard.
This mod also allows you to drag and drop new mods, making installing them incredibly easy. It is easily one of the very best Assetto Corsa mods and is the first download that I always recommend picking up.
Installing Content Manager is incredibly easy. The download file includes an .EXE file which you can run to install it. Run through the installation wizard, following on screen instructions to complete the installation. You can then launch Content Manager to manage everything to do with Assetto Corsa.
For more information on this app, and a more detailed tutorial on how to install Content Manager, read our complete setup guide.
Custom Shaders Patch is the next mod you’ll need to enable rain in Assetto Corsa. You can download it from several places, including acstuff.ru or Ilja Jusupov’s Patreon. The easiest way to install CSP, though, is from within Content Manager.
Content Manager comes with Custom Shaders Patch fully implemented, all you need to do is install CSP from the settings screen inside Content Manager.
To find it, go to the settings in the top navigation menu and select Custom Shaders Patch. If it doesn’t detect that CSP is already installed, it will give you the option to install it. Simply click this install button and let Content Manager install CSP for you.
We do have a complete tutorial for installing and configuring Custom Shaders Patch that delves into the process in more detail. It also explains how to use previous versions or access preview builds.
To enable RainFX, you need to download the preview version of Custom Shaders Patch from Ilja Jusupov’s Patreon. Downloading and installing this preview build of CSP does mean you can skip this entire step.
Technically, SOL isn’t required to use RainFX. However, it improves the customisation and set-up for custom weather. This is a free mod, so I recommend downloading it to give you full control over how the weather looks and behaves.
SOL can be downloaded from Overtage.gg (formerly RaceDepartment) for free, or you can subscribe to the creator’s Patreon (Peter Boese) to download a newer and more advanced version, as well as the complete Pure implementation.
Whichever version of SOL you download, follow the instructions below to install it.
Read our complete Assetto Corsa SOL tutorial for more in-depth installation instructions as well as recommended settings to get the most from this mod.
RainFX is a mod that is tricky to find if you don’t know where to look. It is the mod that is responsible for creating physical rain particles and realistic weather effects, but you don’t download this mod on its own.
Instead, RainFX is a part of the Lights Patch and Custom Shaders Patch preview build that is available from Ilja Jusupov. You will need to subscribe to Ilja’s Patreon, which can be done for as little as $1, or you can choose a higher tier to support this mod’s creator.
To install Lights Patch which includes RainFX, follow the steps below;
With all of the mods installed, you do need to change a few settings just to make sure everything is working correctly. Below are our recommendations on which settings to update to make the weather and rain as realistic as possible.
These settings can all be changed from inside the Content Manager settings, using the Weather FX and Rain FX submenus.
With everything installed and enabled, it’s time to start using the realistic rain while driving in Assetto Corsa. You can change the weather before you load a session to set the starting weather conditions, and you can have further control when you are loaded into a session.
When creating a new session, you can set the starting weather using the weather drop-down menu. There are a range of presets from cloud coverage, to rain intensity, and you can control three individual areas. These are accessed by hovering over the “Sol 2.5 dynamic” setting.
When you load into a session, you have much more detailed control over the current and upcoming weather settings. Navigate to the right sidebar and select the SOL Planner app. This will load up a detailed scheduler where you can schedule changeable weather and select the current conditions.
Within the SOL Planner, you have control over the intensity of the rain, probability of changing conditions, puddle formation, track wetness and much more.
To adjust SOL settings while in Assetto Corsa, follow our tutorial below;
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.
You can use the links below to shop for your favourite sim racing products, or for any products that we may have recommended. These links are affiliate links, and will earn us a small commission, with no additional cost for you.
RainFX is part of the Lights Patch and Custom Shaders Patch preview mod, only available by subscribing to the creator’s Patreon channel. You can subscribe for just $1, and download the latest version of Lights Patch to add RainFX to Assetto Corsa.
If the RainFX settings aren’t available inside Content Manager, it is likely you do not have the correct preview version of Custom Shaders Patch installed. Download it from Ilja’s Patreon and install it to enable the Rain FX settings. The free version of CSP does not include RainFX.
To enable rain physics in Assetto Corsa, you need to install the latest preview version of CSP, available from Ilja’s Patreon. This includes and enables RainFX allowing for realistic rain physics in Assetto Corsa.
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
View all articles written by RichFind the latest sim racing car setups to always have the advantage on track, with the best ACC car setups, iRacing setups and F1 24 setups.
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