In May, San Luis typically sees daytime highs of 30.6°C and overnight lows around 21.5°C. Compared to the annual average high of 30.3°C, May runs +0.3°C.
May in San Luis averages a daytime high of 30.6°C and an overnight low of 21.5°C.
May runs +0.3°C compared to San Luis's annual average high of 30.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 30.6°C and cooler evenings around 21.5°C.