After some recent heavy rain both drivers side doors have filled with quite a bit of water. I assumed that drain holes were blocked but couldn’t find them. I drained them by pulling the door seas out just enough to drain most of the the water. Where are the drain holes located?  I assume the water has entered through the window seals. Is this an easy fix?

Pull the seals to one side and give a good wash with soapy water ,its gets dirty and muddy under the seals ,this worked when my back door filled up been ok since 👍

Yes , I've had the same happen on doors that are normally not opened. ( search for my posts )..

The drain holes are in the bottom of the door of course & are very close to the lip formed by the outer skin.
It seems to me that with the door shut and seal partly compressed the seal does to a certain extent block said drain hole, so with a finger move the  seal away from the inner face of the outer skin then run a old rag the full length of the door.
having found where the drain holes are do as Mickvrs220 has suggested .