San Juan, Puerto RicoQuick decision
When to visit San Juan?
🌞 Best time overall
January
🌡️ Optimal temperature
22°C–28°C in January
🌧 Least rain
47% rainy days in January
🌧 Wettest month
September (74%)
📅 Best score
8.0/10
By trip type
Best time by type of trip
Condado & Isla VerdeYear-round — urban beaches, warm Caribbean water.
Viejo San JuanYear-round — pastel colonial streets, El Morro fortress, UNESCO.
Piña colada & cuisineYear-round — birthplace of piña colada, mofongo, lechón.
BudgetMay–Nov — hurricane season but prices –30%, fewer tourists.
Monthly climate data
San Juan weather month by month
| Month | Min °C | Max °C | Rainy days (%) | Precip. mm/d | Sun h/d | Score |
|---|---|---|---|---|---|---|
| 🌤️ January | 22°C | 28°C | 47% | 1.8 | 10.9h | 8.0/10 |
| 🌤️ February | 22°C | 28°C | 55% | 2.2 | 11.0h | 7.8/10 |
| 🌤️ March | 22°C | 28°C | 53% | 2.0 | 11.2h | 7.9/10 |
| 🌤️ April | 23°C | 29°C | 59% | 2.9 | 12.1h | 7.6/10 |
| 🌤️ May | 24°C | 30°C | 59% | 2.6 | 12.6h | 7.5/10 |
| 🌤️ June | 25°C | 31°C | 56% | 2.0 | 12.9h | 7.5/10 |
| ⛅ July | 25°C | 31°C | 67% | 2.7 | 12.7h | 7.3/10 |
| ⛅ August | 25°C | 31°C | 65% | 3.2 | 12.1h | 7.2/10 |
| ⛅ September | 25°C | 31°C | 74% | 5.3 | 11.5h | 7.1/10 |
| ⛅ October | 24°C | 30°C | 71% | 4.1 | 11.2h | 7.2/10 |
| ⛅ November | 24°C | 29°C | 67% | 4.4 | 10.7h | 7.3/10 |
| 🌤️ December | 23°C | 28°C | 57% | 2.1 | 10.8h | 7.7/10 |
Ideal
Fair
Challenging climate
Source: Open-Meteo · 10 years
🌴 Tropical destination — heavy rain months benefit from an algorithmic adjustment: tropical showers are intense but brief and usually don't ruin a trip.
Seasonal breakdown
What to expect each season
🌸 Spring (Mar–May) — Good time
Average 29°C, 57% rainy days, 12.0h sunshine/day. Score: 7.7/10.
☀️ Summer (Jun–Aug) — Good time
Average 31°C, 63% rainy days, 12.6h sunshine/day. Score: 7.3/10.
🍂 Autumn (Sep–Nov) — Good time
Average 30°C, 71% rainy days, 11.1h sunshine/day. Score: 7.2/10.
❄️ Winter (Dec–Feb) — Good time
Average 28°C, 53% rainy days, 10.9h sunshine/day. Score: 7.8/10.
Accommodation
Find a place to stay in San Juan
Check availability during the recommended period
Tip : off-peak months (September, October) are cheapest but weather is significantly worse.
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Activities and tours in San Juan
Guided tours, skip-the-line tickets and local experiences.
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Flights
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Monthly weather
Detailed weather by month
FAQ
Frequently asked questions
January is ideal with 47% rainy days and 28°C.
September is the wettest month with 74% rainy days.
Yes, January is the best month with an average of 28°C.
In winter, the average score is 7.8/10. Acceptable conditions for cultural visits.
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