Weather Comparison
San Juan vs Santo Domingo
Side-by-side weather comparison for May
May Weather: San Juan vs Santo Domingo
| Metric | San Juan | Santo Domingo | Better |
|---|---|---|---|
| Average HighHigher is warmer | 30°C (86°F)▲ | 29°C (84°F) | San Juan |
| Average LowHigher is milder | 23°C (73°F)▲ | 22°C (72°F) | San Juan |
| Rain DaysFewer is drier | 17 days▲ | 21 days | San Juan |
| PrecipitationLess is drier | 108 mm▲ | 120 mm | San Juan |
| Sunshine HoursMore is sunnier | 12h/day | 12h/day | Tie |
| HumidityLower is more comfortable | 78% | 78% | Tie |
| UV IndexLower is safer | 9 | 9 | Tie |
| Wind SpeedCalmer is better | 19 km/h | 13 km/h▲ | Santo Domingo |
Which City is Better in May?
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, San Juan edges ahead as the better destination in May. San Juan offers 12 hours of daily sunshine with only 17 rain days, while Santo Domingo sees 12 sunshine hours and 21 rain days.
San Juan can feel quite hot at 30°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.
Temperature Comparison in May
San Juan reaches an average high of 30°C (86°F) and drops to 23°C (73°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 two cities feel quite similar in terms of temperature.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in May.
Rainfall Comparison in May
San Juan receives approximately 108 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 12 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 May
Highs of 30°C, lows of 23°C, 17 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 May
Highs of 29°C, lows of 22°C, 21 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 May.
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.May 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 May
Full forecast, packing tips, and activities
Santo Domingo Weather in May
Full forecast, packing tips, and activities