Can wind force rain into the soffits?
Yes, if the interior ceiling is getting wet at the wall and radiating outward this may be the cause. This is a common occurrence in high wind areas especially with the use of vinyl or aluminum soffits or soffit systems that are not inset from the fascia system.

One solution is to replace the soffit with solid wood or solid fiber cement, and provide ventilation through a continuous vent that is only a few inches wide and centred towards the wall. Or install individual vents that have louvres, make sure the louvres are pointing towards the wall.  Another solution that may help is to use a gutter there that provides adequate drainage. 

The solution really is dependent on several factors, the height of the soffit relative to other parts of the structure, or other roofs around or underneath the area. The exposure and strength of the wind, and the size and design of the overhang also should be considered.