San Juan Weather in December
Puerto Rico · 30-year monthly averages
👍 Good time to visit
December in San Juan is warm, with average daytime highs around 29°C (84°F) and nighttime lows near 23°C (73°F). Expect roughly 123mm of precipitation spread over about 15 rainy days, and this is one of the wetter months.
Avg high
29°C
84°F
Avg low
23°C
73°F
Rainfall
123mm
rainy
Rainy days
15
days with ≥1mm
🎒 What to pack
- light summer clothing
- sunscreen and sunglasses
- compact umbrella or rain jacket
December vs the rest of the year
FAQ
- How hot is San Juan in December?
- December in San Juan is warm, with average daytime highs around 29°C (84°F) and nighttime lows near 23°C (73°F). Expect roughly 123mm of precipitation spread over about 15 rainy days, and this is one of the wetter months.
- Does it rain a lot in San Juan in December?
- San Juan sees around 123mm of precipitation in December on average — rainy by global standards.
- Is December a good time to visit San Juan?
- December is a good month to visit San Juan, with generally agreeable conditions.