In May, San Clemente typically sees daytime highs of 21.4°C and overnight lows around 12.3°C. Compared to the annual average high of 22.2°C, May runs -0.8°C.
May in San Clemente averages a daytime high of 21.4°C and an overnight low of 12.3°C.
May runs -0.8°C compared to San Clemente's annual average high of 22.2°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 21.4°C and cooler evenings around 12.3°C.