Final decision to be made at 5pm tomorrow
Sailings of the Ben-My-Chree overnight from Sunday into Monday could be cancelled.
The crossings between Douglas and Heysham are subject to disruption due to the forecast adverse weather.
Isolated wintry showers and temperatures as low as 0°C are forecast for Easter Monday on the Isle of Man.
The Isle of Man Steam Packet Company says a final decision will be made at 5pm tomorrow.