In March, San Isidro typically sees daytime highs of 26.6°C and overnight lows around 19.3°C. Compared to the annual average high of 22.9°C, March runs +3.7°C.
March in San Isidro averages a daytime high of 26.6°C and an overnight low of 19.3°C.
March runs +3.7°C compared to San Isidro's annual average high of 22.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 26.6°C and cooler evenings around 19.3°C.