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 | 
1851
Storms are listed in the basin where they reached their maximum intensity. Asterisks denote landfall on a major island or continent.
| Northern Atlantic | Southern Indian | 
| UNNAMED
* Jun 23-28 | UNNAMED
* Mar 20-26 | 
| UNNAMED
* Jun 29-Jul 4 | UNNAMED
* Mar 21-28 | 
| UNNAMED Jul 5-5 | UNNAMED Mar 21-23 | 
| UNNAMED Jul 10-10 | UNNAMED Mar 20-22 | 
| UNNAMED Aug 1-7 | |
| UNNAMED
* Aug 16-28 | |
| UNNAMED Aug 28-Sep 4 | |
| UNNAMED
* Sep 6-8 | |
| UNNAMED Sep 10-12 | |
| AL01
* Sep 12-16 | |
| UNNAMED Sep 13-16 | |
| AL02 Sep 16-27 | |
| AL03
* Oct 9-14 | |
| UNNAMED
* Oct 16-19 | |
| AL04
* Nov 4-19 |