San Juan vs Santo Domingo

San Juan and Santo Domingo 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.

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

San Juan reaches an average high of 32°C (90°F) and drops to 25°C (77°F) at night during May. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

Santo Domingo averages 29°C (84°F) for the high and 22°C (72°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.

San Juan receives approximately 201 mm of rainfall across 17 rain days during May. Rain is frequent, so waterproof gear is essential.

Santo Domingo sees 120 mm over 21 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%.