On March 18, 2026, the weather forecast for San Juan, Puerto Rico predicts a warm day with temperatures reaching a maximum of 28°C and a minimum of 23°C. Wind speeds are expected to be moderate at 21 km/h, with humidity levels averaging around 80%. Conditions appear to be stable throughout the day with no precipitation expected.

In the morning hours, meteorological reports indicate that humidity will remain high at 80%, with no rain in sight. Moderate southeast winds are anticipated at 21 km/h, providing a comfortable morning for residents. As the morning progresses into mid-morning, the humidity is projected to decrease slightly to 74%, but winds may pick up to 25 km/h from the southeast, maintaining the warm conditions throughout the region.

By afternoon and into the evening, the weather remains favorable with no rain predicted. Winds will continue to blow moderately at around 28 km/h from the east and taper down to 25 km/h at night. This consistent weather pattern suggests a pleasant day for outdoor activities in San Juan, with high humidity but no interruption from rain.