This research investigated the indoor air temperature and relative humidity profiles for 18 patient rooms in surgical, medical, cardiology and oncology wards in two hospitals. Also, 522 patient thermal surveys were completed in parallel with the monitoring task. The monitoring covered the hottest summer months; June, July, August, September in 2018 in Saudi Arabia. The selected hospitals were (i) the International Medical Centre (IMC), Jeddah and (ii) King Abdullah Medical City (KAMC), Makkah.