| Basin | Season start | Season end |
| NORTHERN HEMISPHERE | ||
| Northwest Pacific | 1 April | 31 January |
| Northeast Pacific | 15 May | 30 November |
| Central Pacific | 1 June | 30 November |
| North Atlantic | 1 June | 30 November |
| North Indian | 1 April | 31 December |
| SOUTHERN HEMISPHERE | ||
| Australia & Southwest Pacific South Indian | 1 November | 30 April |
Tropical cyclone seasons
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