This work was carried out to observe salts effects under different temperatures. Anadenanthera pavonina L. seeds from Inúbia Paulista, SP, were scarified with H2SO4 during 20 minutes and washed in distilled water. The experiments were carried out with four replicates of 50 seeds distributed in Petri dishes having filter paper moistened with different salt solutions (KCl, NaCl, CaCl2) at several concentrations (0.0; -0.2; -0.4; -0.6; -0.8; -1.0; -1.2; -1.4 and -1.5MPa). The tests were conducted at temperatures of 25, 30 and 35°C. The values of germination percentage and rate were calculated. After, variance analysis (Anova) and Tukey test were done. A reduction in the germination and rate was observed when the salt concentrations were increased at the three temperatures. Seeds under temperatures at 25 and 30°C presented a maximum tolerance limit between -1.2 and -1.3MPa for KCl and CaCl2 and between -1.4 and -1.5MPa for NaCl. At 35°C, it was observed a reduction on the maximum tolerance limit to three salts tested. KCl is more toxic than NaCl and NaCl is more toxic than CaCl2 to these seeds