Pre-season Forecasts
| Source | Date | Named storms |
Hurricanes | Major hurricanes |
| Eastern | Average | 15.3 | 8.8 | 4.2 |
| Eastern | May 16, 2005 | 11–15 | 6 – 8 | 2–4 |
| Eastern | Actual activity | 15 | 7 | 2 |
| Central | Average | 4–5 | 1 | – |
| Central | May 16, 2005 | 2–3 | – | – |
| Central | Actual activity | 2 | 2 | 1 |
The U.S. National Oceanic and Atmospheric Administration predicted a slow year, with only a 10% chance of above-average storm activity in the eastern North Pacific and a 70% chance of below-normal activity. The pre-season forecast predicted 11 to 15 tropical storms, 6 to 8 hurricanes, and 2 to 4 major hurricanes (Category 3 or higher on the Saffir-Simpson Hurricane Scale).
The forecast for the central North Pacific was for a below-average season, with only two or three storms impacting the region, below the normal four to five.
Read more about this topic: 2005 Pacific Hurricane Season