In March, San Juan typically sees daytime highs of 31.3°C and overnight lows around 22.8°C. Compared to the annual average high of 30.4°C, March runs +0.9°C.
March in San Juan averages a daytime high of 31.3°C and an overnight low of 22.8°C.
March runs +0.9°C compared to San Juan's annual average high of 30.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 31.3°C and cooler evenings around 22.8°C.