Future conditions of ocean warming threaten sedentary coastal marine life including abalone that also become one of valuable seafood commodities. Various studies have been conducted to address the effect of the future environmental condition across different abalone life stages and geographic distribution. However, various warming magnitudes in the experiment between studies might influence the magnitude of the biological response. Despite growing evidence, it remains unclear whether the effects of warming and its magnitude relative to the future condition change across life stages and regions on abalone. This meta-analysis investigates whether the effects of warming intensity, relative to projected future warming conditions, on abalone responses differed across different life stages and biogeographic regions. This study examined 294 literatures out of 2251 regarding environmental change on abalone from Science Direct, Scopus, and WoS database between 1990 to 2025. Paper selection was performed based on PRISMA method for scientific review. The mean biological response was obtained to calculate its effect size and sampling variance, before being compared between biological responses, life stages and regions, using a multilevel meta-analysis model. We found that the effects of warming intensity differed on abalone life stages (F4,3637 = 88.8856, p<0.0001) and regions (F2,3655 = 57.4277, p < 0.0001). Embryos and larvae had strong negative sensitivity to warming intensity. In contrast, adults showed a slight negative sensitivity, while juveniles had a weak positive response. Meanwhile, abalone in the tropic showed strong negative response as warming intensity increased, whereas temperate abalone had a weak positive response. This study shows that early life stages and tropical abalone will be detrimentally affected by the future warming condition. Increased warming conditions might impair early-life performance that potentially reduce recruitment of natural populations for the long-term under future environmental conditions, and tropical abalone populations may face a greater risk for their future existence.