Weather in San Juan in December
San Juan, Puerto Rico averages a high of 28.1°C (82.6°F) and low of 22.3°C (72.1°F) in December, with 13 rain days and 10.6 hours of daily sunshine. Travel score: 75.5/100 (Good). The best time to visit San Juan is March.
High
28°C83°F
Low
22°C72°F
🌧️
13
rain days
☀️
10.6
hrs/day sunshine
💧
81%
humidity
76— Good
December in San Juan is hot and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in San Juan?
How much does it rain in San Juan in December?
San Juan receives an average of 52.2mm of rainfall across 13 rainy days in December. The annual total is 912.5mm.
What should I pack for San Juan in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light layers and t-shirts
Warm weather around 28°C
🧴
Sunscreen SPF 30+
11 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
Traveling to Puerto Rico in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31