Swim for Stardew Valley

What this mod does

Swim, by aedenthorn, lets you jump into any body of water in Stardew Valley: the ocean, the rivers or the mountain lake. Besides swimming, you can dive to look for treasure and swim among colorful fish.

What it adds

• Get in and out of the water with the J key, dive with H and put on or take off your swimsuit with K.
• Use tools while swimming and change maps by swimming to the edge.
• An oxygen meter based on your max energy.
• Diving requires the optional Dive Maps file from the same page.

Keys and the rest of the options are changed in config.json.

Requirements and compatibility

It only needs SMAPI. Version 4.0.2 (October 16, 2026, 509 KB) fixes a bug; 4.0.0 was a rewrite so the mod would stop breaking save serialization, the most serious problem in earlier versions. It’s tagged as compatible with 1.6.

The changelog includes multiplayer fixes, but the page doesn’t say whether every player needs it. It doesn’t confirm Android either. There are 47 open bug reports, which is normal for a mod this size, but it’s a good idea to back up your save.

Requirements

• Stardew Valley 1.6.x (PC)
• SMAPI 4.x (latest version)
• Optional: Dive Maps (from the same page) for diving

How to install it

1. Install SMAPI first (see its mod page) and launch the game once with it to make sure it works.
2. Open the Swim page on Nexus Mods, go to the Files tab and click Manual download on the main file (Swim 4.0.2). You need a free Nexus account to download.
3. Extract the .zip outside the game folder and move the resulting folder into the Mods folder, inside the game folder.
4. If you want to dive, also download Dive Maps from Optional files and copy it into Mods the same way.
5. Launch the game with SMAPI, walk up to the shore and press J to get into the water.

Version history

1. 4.0.216 Oct 2026Current

   Fixes a null reference error

2. 4.0.122 Jun 2026

   Fix for Abigail's cave

Common problems