In May, San Jose typically sees daytime highs of 22.9°C and overnight lows around 9.0°C. Compared to the annual average high of 21.3°C, May runs +1.6°C.
May in San Jose averages a daytime high of 22.9°C and an overnight low of 9.0°C.
May runs +1.6°C compared to San Jose's annual average high of 21.3°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 22.9°C and cooler evenings around 9.0°C.