Civil Engineering and Architecture 12(5): 3545-3561, 2024 http://www.hrpub.org DOI: 10.13189/cea.2024.120530 Model for Determining Thermal Comfort in Fisherman's Residential Areas on Coasts with Humid Tropical Climates Andi Ahmad Fauzan Bachtiar, Baharuddin Hamzah * , Idawarni Asmal, Nurul Jamala Department of Architecture, Faculty of Engineering, Hasanuddin University, Indonesia Received May 7, 2024; Revised July 8, 2024; Accepted August 23, 2024 Cite This Paper in the Following Citation Styles (a): [1] Andi Ahmad Fauzan Bachtiar, Baharuddin Hamzah, Idawarni Asmal, Nurul Jamala , "Model for Determining Thermal Comfort in Fisherman's Residential Areas on Coasts with Humid Tropical Climates," Civil Engineering and Architecture, Vol. 12, No. 5, pp. 3545 - 3561, 2024. DOI: 10.13189/cea.2024.120530. (b): Andi Ahmad Fauzan Bachtiar, Baharuddin Hamzah, Idawarni Asmal, Nurul Jamala (2024). Model for Determining Thermal Comfort in Fisherman's Residential Areas on Coasts with Humid Tropical Climates. Civil Engineering and Architecture, 12(5), 3545 - 3561. DOI: 10.13189/cea.2024.120530. Copyright©2024 by authors, all rights reserved. Authors agree that this article remains permanently open access under the terms of the Creative Commons Attribution License 4.0 International License Abstract In humid tropical climates, the air feels hot and uncomfortable, and residents generally don't feel comfortable doing activities during the day inside and outside the house. The aim of this study is to develop the innovation model of determining the thermal comfort areas of fishing settlements on the coast. This was carried out using quantitative descriptive methods, surveys, observations, questionnaires, in-depth direct interviews, hobo data loggers U12-012, solar power meters, and photo cameras. The analysis technique uses expert systems, certainty factors, and geographic information system based spatial analysis. The research results show that the model for determining thermal comfort using an expert system, certainty factors and GIS-based spatial analysis is innovative, realistic, accurate and significant after being validated using thermal measuring instruments. Fisherman residential areas of 1.14 ha (34.34%) have comfortable thermal comfort <27.1°C and THI <26°C, exactly at 25.19°C, humidity of 96.12%, THI of 24.99°C, with minimum temperature happening in the morning. The area that feels hot and uncomfortable is as large as 2.19 ha (65.66%) with a temperature of 51.93°C, humidity of 31.69%, and THI of 44.84°C occurring during the day, with maximum temperatures at around 11:00-14:00 am (GMT+08:00) due to high radiation, lack of vegetation and trees. Keywords Certainty Factor, Expert System, GIS, Spatial Analysis, Temperature Humidity Index, Uncomfortable 1. Introduction The 3.33 ha research location is in a fishing residential area on the coast of Central Karama Hamlet (Dusun Karama Tengah), Biringkassi Village, North Galesong District, Takalar Regency, Indonesia, located between 119°23'0'' E - 119°23'9'' E and 5º13'28'' S - 5º13'36'' S. Community residents at the research location feel stifling, hot and uncomfortable inside or outside the house during the day, so they do more activities and rest under the traditional fishermen's houses. Thermal comfort is differentiated between thermal comfort inside the house and outside the house. Thermal comfort at the research location is thermal comfort outside the house, specifically thermal comfort in fishing residential areas. A hot environment due to lack of land and tree cover will have a serious impact on human health [1-3]. Thermal comfort can be determined based on: physiology, behavior and psychology of the occupants, through measuring thermal elements such as indoor and outdoor temperature, wind speed and relative humidity [4]. Factors that influence thermal performance (air temperature, wind speed, radiation temperature, heat transfer, ventilation openings and dimensions) will find the