Weather Comparison
San Juan vs Santo Domingo
Side-by-side weather comparison for December
December Weather: San Juan vs Santo Domingo
| Metric | San Juan | Santo Domingo | Better |
|---|---|---|---|
| Average HighHigher is warmer | 28°C (82°F) | 28°C (82°F) | Tie |
| Average LowHigher is milder | 22°C (72°F)▲ | 21°C (70°F) | San Juan |
| Rain DaysFewer is drier | 13 days | 12 days▲ | Santo Domingo |
| PrecipitationLess is drier | 49 mm | 42 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 | 20 km/h | 14 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.
San Juan sits in the comfortable travel range at 28°C. Santo Domingo is also comfortable at 28°C.
For travelers who prioritize dry weather, Santo Domingo is the stronger choice in December.
Temperature Comparison in December
San Juan reaches an average high of 28°C (82°F) and drops to 22°C (72°F) at night during December. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.
Santo Domingo 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.
Rainfall Comparison in December
San Juan receives approximately 49 mm of rainfall across 13 rain days during December. You can expect rain roughly every other day.
Santo Domingo sees 42 mm over 12 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: San Juan vs Santo Domingo
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
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
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: San Juan vs Santo Domingo
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 | San Juan | Santo Domingo | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 28°C | 11d | 27°C | 12d |
| Feb | 29°C | 9d | 28°C | 11d |
| Mar | 29°C | 9d | 28°C | 12d |
| Apr | 30°C | 12d | 29°C | 16d |
| May | 30°C | 17d | 29°C | 21d |
| Jun | 31°C | 14d | 30°C | 22d |
| Jul | 31°C | 17d | 30°C | 22d |
| Aug | 31°C | 19d | 30°C | 22d |
| Sep | 31°C | 21d | 30°C | 21d |
| Oct | 30°C | 21d | 29°C | 22d |
| Nov | 29°C | 19d | 28°C | 16d |
| Dec | 28°C | 13d | 28°C | 12d |
San Juan Weather in December
Full forecast, packing tips, and activities
Santo Domingo Weather in December
Full forecast, packing tips, and activities