In January, San Martin typically sees daytime highs of 33.6°C and overnight lows around 18.3°C. Compared to the annual average high of 24.9°C, January runs +8.7°C.
January in San Martin averages a daytime high of 33.6°C and an overnight low of 18.3°C.
January runs +8.7°C compared to San Martin's annual average high of 24.9°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 33.6°C and cooler evenings around 18.3°C.