You Do Need power plug adapter while traveling from Israel to Madeira.

Here is Why You Need An Adapter

The outlet and plug type used in Madeira are C and F and in Israel are C and H. This is how they look like.

Israel

In Israel, outlets of type C and H are in use.

Type C

Type H

Madeira

In Madeira, outlets of type C and F are in use.

Type C

Type F