| Category 2 tropical cyclone (Aus scale) | |
|---|---|
| Category 1 tropical cyclone (SSHWS) | |
 Satellite image of Tropical Cyclone William near its peak intensity | |
| Formed | December 30, 1994 |
| Dissipated | January 5, 1995 |
| (Extratropical after January 3, 1995) | |
| Highest winds | 10-minute sustained: 110 km/h (70 mph) 1-minute sustained: 120 km/h (75 mph) |
| Lowest pressure | 975 hPa (mbar); 28.79 inHg |
| Areas affected | Cook Islands, French Polynesia |
| Part of the 1994–95 South Pacific cyclone season | |