B737-800 Captain reported executing a go-around from a low altitude at DFW after encountering gusty winds and strong wake turbulence from a preceding A380.

Narrative

I was pilot flying as Captain going into DFW Runway 18R. Lone Star Approach told us we'd be following a Super Airbus A380. Winds were reported at about 180º 15 gusting to 26 knots. For this reason; I decided to use a flaps 15 landing. I had not done one in a while; and figured it would be a good time to practice due to the gusty winds. Before the approach my FO and I went over the flaps 15 go-around procedures which would be setting the flaps to 1 instead of the normal 15. We had the Airbus A380 in sight the entire approach and the controller issued us the wake turbulence warning and informed us we were about 8.5 NM behind it. It was a windy approach and I turned off the autopilot at about 500 feet AGL. It was only light turbulence throughout the approach; but control of the aircraft was very manageable. As we approached the threshold; the turbulence increased but I still had full control of the aircraft. At about 20 or 30 feet above the runway we hit a huge gust of wind. I assume this was wake turbulence from the preceding A380. We were no longer in safe position to land; so I executed a go-around. The main landing gear did not touch the pavement; but I believe it was close. The go-around maneuver went smoothly thanks to the fact we had just briefed the procedure. We circled to the downwind. At this point I decided to hand the controls to the FO to land as I was a little worked up from the event. We landed uneventfully on the 2nd attempt.Overall this was a well executed approach and go-around. After a previous event; I always make sure to review windshear and go-around procedures on a regular basis. However; I was not prepared to hit wake turbulence at such a low altitude. Although 8 NM miles behind a Super seemed like enough distance; next time I might prefer to be 10 NM behind one. I had assumed the winds at the time would have blown the wake away; but due to the wind being 'straight down' the runway; it may have lingered further back into our touchdown zone. I thought I might fly the approach slightly higher; but due to the gusty winds; I also didn't want to float too much and opted to have a firmer touchdown. We never were below the glide path at any point.