San Isidro's climate is characterized by mild winters and warm summers. The winter months, June to August, are cool with average temperatures ranging from 11-12°C, while the spring season, September to November, sees a gradual warming trend, with temperatures increasing to an average of 15-21°C. Summer months, December to February, are hot, with average highs reaching up to 24-25°C. Autumn, March to May, is mild and pleasant, with temperatures gradually decreasing from the summer highs. The temperature fluctuations throughout the year result in distinct seasonal patterns, with little variation between day and night temperatures.