In tactile interaction in a virtual space, tactile presentation to the palm over a wider plane is required. A highly uniform tactile stimulus is required to present a stationary flat surface on the palm, and it is necessary to identify the parameters of tactile presentation that improve uniformity. Generating ultrasound pressure distribution over a surface area improves the uniformity of tactile stimulus, whereas the perceived intensity decreases as the presentation area expands because the sound pressure is dispersed. In this study, we aimed to present a stronger surface stimulus by using spatiotemporal modulation (STM) to rapidly move the ultrasound focus within the presentation area and thus distribute the concentrated sound pressure over the entire area. We showed that tactile presentation of a square area as a simple shape can be achieved using STM by adjusting the focal path and the number of path passes per unit of time, thereby improving the perceived intensity while maintaining spatial uniformity and temporal constancy compared to acoustic field control.