| Unnamed storm 1, 1938 West Pacific | Jan 11 – Jan 13 | — | — | Storm |
| Unnamed storm 2, 1938 West Pacific | Apr 5 – Apr 12 | — | — | Storm |
| Unnamed storm 3, 1938 West Pacific | Apr 29 – May 4 | — | — | Storm |
| Unnamed storm 4, 1938 West Pacific | May 9 – May 16 | — | — | Storm |
| Unnamed storm 5, 1938 West Pacific | Jun 21 – Jul 3 | — | — | Storm |
| Unnamed storm 6, 1938 West Pacific | Jul 7 – Jul 10 | — | — | Storm |
| Unnamed storm 7, 1938 West Pacific | Jul 15 – Jul 19 | — | — | Storm |
| Unnamed storm 8, 1938 West Pacific | Jul 18 – Jul 19 | — | — | Storm |
| Unnamed storm 9, 1938 West Pacific | Aug 4 – Aug 13 | — | — | Storm |
| Unnamed storm 10, 1938 West Pacific | Aug 5 – Aug 8 | — | — | Storm |
| Unnamed storm 11, 1938 West Pacific | Aug 11 – Aug 16 | — | — | Storm |
| Unnamed storm 12, 1938 West Pacific | Aug 20 – Aug 23 | — | — | Storm |
| Unnamed storm 13, 1938 West Pacific | Aug 23 – Aug 26 | — | — | Storm |
| Unnamed storm 14, 1938 West Pacific | Aug 24 – Aug 27 | — | — | Storm |
| Unnamed storm 15, 1938 West Pacific | Aug 25 – Sep 2 | — | — | Storm |
| Unnamed storm 16, 1938 West Pacific | Aug 30 – Sep 9 | — | — | Storm |
| Unnamed storm 17, 1938 West Pacific | Sep 1 – Sep 4 | — | — | Storm |
| Unnamed storm 18, 1938 West Pacific | Sep 6 – Sep 9 | — | — | Storm |
| Unnamed storm 19, 1938 West Pacific | Sep 17 – Sep 26 | — | — | Storm |
| Unnamed storm 20, 1938 West Pacific | Sep 23 – Sep 28 | — | — | Storm |
| Unnamed storm 21, 1938 West Pacific | Sep 25 – Sep 28 | — | — | Storm |
| Unnamed storm 22, 1938 West Pacific | Sep 27 – Oct 7 | — | — | Storm |
| Unnamed storm 23, 1938 West Pacific | Oct 1 – Oct 8 | — | — | Storm |
| Unnamed storm 24, 1938 West Pacific | Oct 6 – Oct 16 | — | — | Storm |
| Unnamed storm 25, 1938 West Pacific | Oct 10 – Oct 21 | — | — | Storm |
| Unnamed storm 26, 1938 West Pacific | Oct 13 – Oct 16 | — | — | Storm |
| Unnamed storm 27, 1938 West Pacific | Nov 3 – Nov 10 | — | — | Storm |
| Unnamed storm 28, 1938 West Pacific | Nov 10 – Nov 16 | — | — | Storm |
| Unnamed storm 29, 1938 West Pacific | Nov 21 – Nov 27 | — | — | Storm |
| Unnamed storm 30, 1938 West Pacific | Nov 28 – Dec 2 | — | — | Storm |
| Unnamed storm 31, 1938 West Pacific | Dec 4 – Dec 10 | — | — | Storm |