Use multiple layers of thick plastc foil in combination with some strong tape.

Multiple layers since it provides better insulation that way, and strong tape fpr the wind.

Make sure you completely seal the window by some margin with the foil and justape them over your window one after the other.

You can relatively easily remove them again when you bought your new glass, too

Use multiple layers of thick plastc foil in combination with some strong tape.

Multiple layers since it provides better insulation that way, and strong tape for the wind.

Make sure you completely seal the window by some margin with the foil and just tape them over your window one after the other.

You can relatively easily remove them again when you bought your new glass, too