Air carrier pilot reported fatigue; gusts; flap overspeed and GPWS warning resulted in a CFTT event. Pilot reported during GPWS alert all terrain in sight and aircraft on glidepath.

Narrative

Inside the final approach point on the RNAV (RNP) Z Runway 08 at ABQ airport at approximately 900 feet AGL; the autopilot was disengaged. The crew then experienced a gust of wind that increased indicated airspeed approximately 13 knots from the target speed of 166 knots. This exceeded the 30 flap placard airspeed of 175 knots; engaging the flap load relief function. Immediately after; the GPWS warning Too Low; Terrain" sounded but the crew was able to visually verify terrain clearance from cultural lighting; then confirmed the aircraft was on the GPS glide path as well as having a good VASI (red over white) indication. These indications remained for the duration of the approach to touchdown. Power was reduced; the speed was brought back and the crew was able to recapture and verify stabilized approach criteria by 500 feet. The landing and ground operations were uneventful. A maintenance entry was made for the flap over-speed. Before descent; the approach had been thoroughly briefed and Runway 8 was specifically requested since the winds were directly down the runway (winds 070/20; gust 30). Decision points about wind shear and both ROW and ELP divert plans were briefed. The flaps 30 setting was deliberately chosen because gusty winds were a consideration. Cause: Fatigue. ABQ; final for Runway 8 inside 1;000 feet."