Field warming experiments over short periods of time lead to substantial rice yield loss: -5,2%/°C. Projections by 2100 from global yield prediction models, calibrated from these experimental data, lead to worrying results for the warming expected for that period: -8,3 %/°C. This value exceeds the hypotheses put forward by the International Food Policy Research Institute, which estimated declines from -4.2%/°C to -6.4%/°C. This study recommends the implementation of active adaptation and mitigation strategies (e.g., genetic selection).