Irrigation management in fruit crops affects the water status of the plant, which directly affects production and quality in various growing cycles. The objective was to evaluate the impact of regulated deficit irrigation (RDI) on the water status of the pear tree cv. 'Triunfo de Viena', under high tropical latitudinal conditions. The applied irrigation treatments corresponded to water regimens with one control (T1), irrigated at 100% of ETC; 74% and 48% crop evapotranspiration (ETc) in the T2 treatment and 60% and 27% ETc in the T3 treatment during the period of rapid fruit growth, in 2014 and 2015, respectively. During the rest of the season, all treatments were watered equally to 100% of the ETc. This implied water savings in the deficit treatments T2 and T3 of 26.4% and 39.6% during 2014 and 51.7% and 72.8% in 2015, respectively. The leaf water potential at predawn (Ψpdl), mid-day stem water potential (Ψstem), the water potential of the fruit at predawn (Ψpdf), and water potential of the fruit at mid-day (Ψf) were clear indicators of the water status of the plant, however, between treatments were generally not different. Ψstem remained between −0.25 and −1.03, showing that RDI treatments evaluated did not cause water stress. The parameters obtained from the pressure-volume curve were similar between treatments because irrigation levels did not generate water stress, mainly due to rains and water reserves in the soil during the experiment. Therefore, osmotic adjustment was not made in any of the treatments. Maximum daily trunk shrinkage was a good indicator of hydric status and responded quickly to environmental conditions allowing its use in irrigation management and, adjusting to a crop under specific conditions. The results contributed to an understanding of the mechanisms of the water status of pears under RDI in high tropical latitudinal conditions.