If You Don't Know Me by Now by Simply Red first appeared on the Israeli foreign-music chart on 23 Apr 1989, entering at #21. It peaked at #5 on 14 May 1989. In total it spent 6 weeks on the chart, last charting on 4 Jun 1989.
| Wk | Date | Pos |
|---|---|---|
| 1 | 23 Apr 1989 | 21 |
| 2 | 30 Apr 1989 | 17 |
| 3 | 7 May 1989 | 10 |
| 4 | 14 May 1989 | 5 |
| 5 | 21 May 1989 | 14 |
| 6 | 28 May 1989 | 22 |