Due to their high-water retention capacity, hydrogels are considered promising soil conditioners to improve soil plant available water content in semi-arid environments; however, little is known about how soil temperature affects the functionality of hydrogels. In this study, the effect of soil temperature on physical attributes of soil amended with a Acrylamide-co-Potassium Acrylate hydrogel was evaluated. A laboratory experiment was installed in a scheme (4 x 4) x 4 - four soil temperatures (30, 45, 65 and 105 degrees C), four exposure times (40, 70, 100, and 130 days) with four repetitions. The test soil was a Leptsol with sandy loam texture and of the hydrogel was applied at a dose of 0.1% w w(-1). Soil moisture at field capacity (theta(FC)) and permanent wilting point (theta(WP)), plant available water (AW), bulk density (BD), and soil porosity were evaluated. The resulting data was subjected to two-way analysis of variance. The hydrogel increased the theta(FC) of the soil, from 0.14 to 0.19 m(3) m(-3) at 45 degrees C and 56 days. At 40 days, a minimum theta(WP) (0.05 m(3) m(-3)) was observed at 92 degrees C. In general, theta(FC) increased, while the theta(WP) decreased, providing improved soil water storage. Plant available water was up to three times higher in soil with hydrogel across a temperature range of 30-105 degrees C. In all treatments irrespective of temperature and exposure time, the soil BD and porosity were improved in comparison to the un-amended control. This constitutes an advantage in the use of the hydrogel as a soil conditioner. Even with the interaction of abiotic factors acting on the hydrogel, there are beneficial effects on the water storage capacity, soil BD, and soil porosity.