Santo Domingo vs San Juan

Santo Domingo and San Juan are closely matched in December. 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 sits in the comfortable travel range at 28°C. San Juan is also comfortable at 28°C.

For travelers who prioritize dry weather, San Juan is the stronger choice in December. Santo Domingo receives 10 more hours of sunshine per day, which matters for sightseeing and outdoor activities.

Santo Domingo reaches an average high of 28°C (82°F) and drops to 21°C (70°F) at night during December. The daily temperature range is 7°C, meaning relatively stable temperatures from day to night.

San Juan averages 28°C (82°F) for the high and 21°C (70°F) for the low, with a daily range of 7°C. The two cities feel quite similar in terms of temperature.

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

Santo Domingo receives approximately 42 mm of rainfall across 12 rain days during December. You can expect rain roughly every other day.

San Juan sees 70 mm over 6 rain days. That makes San Juan the drier option by 6 rain days and 28 mm of total precipitation.

Both cities share similar humidity levels at 78%.