In January, Sao Jose typically sees daytime highs of 29.1°C and overnight lows around 17.9°C. Compared to the annual average high of 25.0°C, January runs +4.1°C.
January in Sao Jose averages a daytime high of 29.1°C and an overnight low of 17.9°C.
January runs +4.1°C compared to Sao Jose's annual average high of 25.0°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 29.1°C and cooler evenings around 17.9°C.