Key - Shading by Saffir Simpson Hurricane Scale
| Tropical Depression or Unknown or Missing | Tropical Storm | Hurricane Cat 1 | Cat 2 | Cat 3 | Cat 4 | Cat 5 | 
1878
Storms are listed in the basin where they reached their maximum intensity. Asterisks denote landfall on a major island or continent.
| Northern Atlantic | Northern Indian | Southern Indian | 
| UNNAMED
* Jul 1-3 | UNNAMED
* Jul 21-30 | UNNAMED Jan 10-14 | 
| UNNAMED
* Jul 7-12 | UNNAMED
* Aug 3-4 | UNNAMED Jan 11-17 | 
| UNNAMED
* Aug 8-19 | UNNAMED
* Aug 6-8 | UNNAMED Jan 11-15 | 
| UNNAMED
* Aug 16-21 | AL04
* Sep 13-20 | UNNAMED Apr 10-13 | 
| AL01 Aug 23-31 | UNNAMED
* Sep 18-23 | UNNAMED Apr 10-14 | 
| UNNAMED
* Sep 1-13 | AL06 Oct 14-15 | UNNAMED Apr 11-16 | 
| AL02 Sep 2-13 | UNNAMED
* Oct 28-30 | |
| AL03 Sep 4-18 | AL01
* Nov 4-6 | |
| UNNAMED Sep 9-23 | UNNAMED
* Dec 5-8 | |
| UNNAMED
* Sep 13-17 | ||
| UNNAMED Sep 23-25 | ||
| UNNAMED
* Sep 24-Oct 9 | ||
| AL05 Oct 8-16 | ||
| UNNAMED
* Oct 9-15 | ||
| UNNAMED Oct 10-19 | ||
| UNNAMED
* Oct 13-25 | ||
| UNNAMED Oct 15-18 | ||
| UNNAMED Oct 18-20 | ||
| UNNAMED Oct 23-28 | ||
| UNNAMED
* Nov 25-Dec 2 | ||
| AL03
* Nov 25-Dec 2 |