Weather Comparison
San Juan vs Santo Domingo
Side-by-side weather comparison for January
January Weather: San Juan vs Santo Domingo
| Metric | San Juan | Santo Domingo | Better |
|---|---|---|---|
| Average HighHigher is warmer | 28°C (82°F)▲ | 27°C (81°F) | San Juan |
| Average LowHigher is milder | 22°C (72°F)▲ | 20°C (68°F) | San Juan |
| Rain DaysFewer is drier | 11 days▲ | 12 days | San Juan |
| PrecipitationLess is drier | 43 mm | 33 mm▲ | Santo Domingo |
| Sunshine HoursMore is sunnier | 11h/day▲ | 10h/day | San Juan |
| 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 January?
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, San Juan edges ahead as the better destination in January. San Juan offers 11 hours of daily sunshine with only 11 rain days, while Santo Domingo sees 10 sunshine hours and 12 rain days.
San Juan sits in the comfortable travel range at 28°C. Santo Domingo is also comfortable at 27°C.
For travelers who prioritize dry weather, San Juan is the stronger choice in January. San Juan receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Temperature Comparison in January
San Juan reaches an average high of 28°C (82°F) and drops to 22°C (72°F) at night during January. The daily temperature range is 6°C, meaning relatively stable temperatures from day to night.
Santo Domingo averages 27°C (81°F) for the high and 20°C (68°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 January.
Rainfall Comparison in January
San Juan receives approximately 43 mm of rainfall across 11 rain days during January. You can expect rain roughly every other day.
Santo Domingo sees 33 mm over 12 rain days. That makes San Juan the drier option by 1 rain day and 10 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 January
Highs of 28°C, lows of 22°C, 11 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 January
Highs of 27°C, lows of 20°C, 12 rain days
- ✓light layers
- ✓a light jacket for evenings
- ✓sunscreen
- ✓waterproof jacket
- ✓compact umbrella
- ✓waterproof shoes
- ✓moisture-wicking fabrics
Pack for both: waterproof jacket, compact umbrella, waterproof shoes, moisture-wicking fabrics. These items are useful in either destination during January.
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.January 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 January
Full forecast, packing tips, and activities
Santo Domingo Weather in January
Full forecast, packing tips, and activities