Approach
The pilot initially conducted a VOR approach to Runway 05. At the minimum descent altitude, visibility was insufficient to land. The pilot was informed that other aircraft had landed on Runway 23 and reported better visibility. Consequently, the pilot requested and received vectors for an ILS approach to Runway 23. During the ILS approach, the wind was reported from 306 degrees at 12 knots.
Landing Incident
On touchdown, the aircraft encountered standing water on the runway and veered to the right. The airplane subsequently departed the runway, traveling into deep water and soft terrain. The nose gear struck a VASI (Visual Approach Slope Indicator) light and failed.
Aftermath
When the pilot exited the aircraft, water was ankle deep beside the runway, and rain was falling heavily. Another pilot reported the presence of vertical windshear.