On GTA5mods:
https://www.gta5-mods.com/misc/realistic-sea-waves-extra-sunny-weather


Realistic Weather Mod:

About:

This mod was called "Realistic Sea Waves" before, but since i started tinkering with other lines, than the lines that only modifies the waves, i decided to rename the mod to "Realistic Weater.xml". Basically this mod modifies the weathers water & other weather tweaks.

Installation:

Locate to this folder:
Grand Theft Auto V\common.rpf\data\levels\gta5\HERE!

Changelog:

1.3
-Redone Clear, Extra Sunny & Thunder/Stormy weathers.
1.2
-Clear Weather is now supported
1.1
-Stormy/Weather is now supported
1.0
-Release with Extra Sunny Weather

-Download OpenIV: http://openiv.com/

Trainer: https://da.gta5-mods.com/scripts/pc-trainer-v
With the trainer change the weather to Stormy/Thunder, Clear or Extra Sunny Weather.

-BossPK