Rapid urbanization contributes to unique local climate. This paper proposed an integrated climatic evaluation method by combining a thermal environmental evaluation model and the geographical information system. The air temperature (T_a), urban heat island intensity (UHII), and the outdoor thermal comfort index (OUT-SET^*) were selected as evaluation parameters. A planned region area in Dagang District of Guangzhou was adopted as a case study, the climatic parameter calculations and spatial visualization under multiple urban blocks were conducted. Results showed that daily average T_a varied between 27.73 ℃ and 29.96 ℃, the average UHII varied between -0.48 ℃ and 2.2 ℃, while OUT-SET^* varied between 29.05 ℃ and 33.44 ℃. By referring to the land use map and spatial distribution maps of green coverage ratio and building floor area ratio, these climatic parameters were influenced in different extent by underlying surface characteristic parameters. By quantitative linear correlation analysis between these parameters, it revealed that UHII had significant negative correlations with both the green coverage ratio and building floor area ratio, the correlation coefficients of which were -0.433 and -0.490, respectively. OUT-SET^* had significant negative correlation with the building floor area ratio and weak negative correlation with green coverage ratio, the correlation coefficients of which were -0.295 and -0.790, respectively