San Juan
Capital of Puerto Rico
San Juan is the capital of Puerto Rico with a population of approximately 342,000 people. Visitors come to see its historic landmarks, including several UNESCO World Heritage sites.
What to see
The city features several UNESCO World Heritage sites, specifically the San Juan National Historic Site, which includes Castillo San Felipe del Morro and Castillo San Cristóbal. Other notable historic landmarks include La Fortaleza and the San José Church. For an archaeological perspective, visitors can explore the Caparra Archaeological Site.
When to go
San Juan experiences warm temperatures year-round, with daily highs ranging from 28 °C to 31 °C and lows between 22 °C and 25 °C. February and March are relatively drier, with about 73 mm and 74 mm of rain respectively, occurring on 13 days. Rainfall increases throughout the year, with the highest frequency of rainy days occurring between July and November, reaching up to 26 days in September.
Getting there
The city is served by two airports. Fernando Luis Ribas Dominicci Airport is located 2 km away. For wider connections, Luis Munoz Marin International Airport is a hub located 12 km from the city.
Top sights in San Juan
Weather by month
The warmest month is August, with an average high of 31 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 28 | 28 | 29 | 29 | 30 | 31 | 31 | 31 | 31 | 30 | 29 | 28 |
| Average low, °C | 22 | 22 | 22 | 23 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 23 |
| Rainfall, mm | 112 | 73 | 74 | 131 | 168 | 110 | 146 | 159 | 169 | 160 | 184 | 158 |
| Rainy days | 14 | 13 | 13 | 15 | 19 | 19 | 23 | 25 | 26 | 24 | 22 | 16 |
Temperatures and rainfall: 1981–2010 averages for San Juan (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.