Santo Domingo vs San Juan

Santo Domingo and San Juan are closely matched in May. Neither city has a clear advantage across all metrics. Your decision should come down to personal preference, cultural interests, and travel logistics rather than weather alone.

Santo Domingo can feel quite hot at 29°C, so plan for heat. San Juan runs hot at 32°C.

For travelers who prioritize dry weather, San Juan is the stronger choice in May. Santo Domingo receives 5 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Santo Domingo reaches an average high of 29°C (84°F) and drops to 22°C (72°F) at night during May. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

San Juan averages 32°C (90°F) for the high and 25°C (77°F) for the low, with a daily range of 7°C. The 3°C difference is noticeable but not dramatic.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in May.

Santo Domingo receives approximately 120 mm of rainfall across 21 rain days during May. Rain is frequent, so waterproof gear is essential.

San Juan sees 201 mm over 17 rain days. That makes San Juan the drier option by 4 rain days and 81 mm of total precipitation.

Both cities share similar humidity levels at 78%.