A laboratory experimental study was conducted to investigate the effects of different coffee waste biochar materials at three temperatures on nitrous oxide (N2O) and carbon dioxide (CO2) emissions from agricultural soil in Central Vietnam. Soil amended with 2% normal biochar, 2% functional biochar (with a high NO3-N adsorption capacity of 20 g N kg -1 ) or no addition was adjusted at 60% water holding capacity, conditioned with 100 mg N-NO3 kg -1 dried-soil and aerobically incubated at 25 o C, 30 o C or 35 o C for 21 days. N2O and CO2 emissions were measured on days 1, 3, 5, 7, 14 and 21. Results showed that the addition of normal biochar caused more CO2 emission but less N2O emission compared to the functional biochar application. At 25 o C, biochar amendment had a neutral or positive effect on N2O and CO2 emissions. At 35C, biochar amendment reduced N2O and CO2 emissions compared to the control. However, there was little difference in N2O and CO2 emissions among biochar treatments. In addition, with increasing temperature, a positive correlation between temperature and N2O and CO2 emissions with the non-biochar amendment and a negative correlation between temperature and N2O with the biochar treatments were observed. This is because temperature probably affects the rate of microbial processes mediating respiration and denitrification and the soil-biochar mixture's mobilization of N availability.