Weather Comparison
Santo Domingo vs San Juan
Side-by-side weather comparison for December
December Weather: Santo Domingo vs San Juan
| Metric | Santo Domingo | San Juan | Better |
|---|---|---|---|
| Average HighHigher is warmer | 28°C (82°F) | 28°C (82°F) | Tie |
| Average LowHigher is milder | 21°C (70°F) | 22°C (72°F)▲ | San Juan |
| Rain DaysFewer is drier | 12 days▲ | 13 days | Santo Domingo |
| PrecipitationLess is drier | 42 mm▲ | 49 mm | Santo Domingo |
| Sunshine HoursMore is sunnier | 11h/day | 11h/day | Tie |
| HumidityLower is more comfortable | 78% | 78% | Tie |
| UV IndexLower is safer | 3 | 3 | Tie |
| Wind SpeedCalmer is better | 14 km/h▲ | 20 km/h | Santo Domingo |
Which City is Better in December?
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Santo Domingo edges ahead as the better destination in December. Santo Domingo offers 11 hours of daily sunshine with only 12 rain days, while San Juan sees 11 sunshine hours and 13 rain days.
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, Santo Domingo is the stronger choice in December.
Temperature Comparison in December
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 22°C (72°F) for the low, with a daily range of 6°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.
Rainfall Comparison 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 49 mm over 13 rain days. That makes Santo Domingo the drier option by 1 rain day and 7 mm of total precipitation.
Both cities share similar humidity levels at 78%.
What to Pack: Santo Domingo vs San Juan
Packing for Santo Domingo in December
Highs of 28°C, lows of 21°C, 12 rain days
- ✓lightweight breathable clothing
- ✓sunscreen SPF 50+
- ✓sunglasses
- ✓a wide-brimmed hat
- ✓waterproof jacket
- ✓compact umbrella
- ✓waterproof shoes
- ✓moisture-wicking fabrics
Packing for San Juan in December
Highs of 28°C, lows of 22°C, 13 rain days
- ✓lightweight breathable clothing
- ✓sunscreen SPF 50+
- ✓sunglasses
- ✓a wide-brimmed hat
- ✓waterproof jacket
- ✓compact umbrella
- ✓waterproof shoes
- ✓moisture-wicking fabrics
Pack for both: lightweight breathable clothing, sunscreen SPF 50+, sunglasses, a wide-brimmed hat, waterproof jacket, compact umbrella, waterproof shoes, moisture-wicking fabrics. These items are useful in either destination during December.
Year-Round Comparison: Santo Domingo vs San Juan
The table below shows average high temperatures and rain days for every month of the year, helping you find the best time to visit either city.December is highlighted for quick reference.
| Month | Santo Domingo | San Juan | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 27°C | 12d | 28°C | 11d |
| Feb | 28°C | 11d | 29°C | 9d |
| Mar | 28°C | 12d | 29°C | 9d |
| Apr | 29°C | 16d | 30°C | 12d |
| May | 29°C | 21d | 30°C | 17d |
| Jun | 30°C | 22d | 31°C | 14d |
| Jul | 30°C | 22d | 31°C | 17d |
| Aug | 30°C | 22d | 31°C | 19d |
| Sep | 30°C | 21d | 31°C | 21d |
| Oct | 29°C | 22d | 30°C | 21d |
| Nov | 28°C | 16d | 29°C | 19d |
| Dec | 28°C | 12d | 28°C | 13d |
Santo Domingo Weather in December
Full forecast, packing tips, and activities
San Juan Weather in December
Full forecast, packing tips, and activities