SeasonScore
San Juan, Puerto Rico
Photo: Tomás Fano · CC BY-SA 2.0

Puerto Rico

San Juan in December

☀️ Dry season

Warm, humid and some showers.

🎒 Pack: quick-dry fabrics · sunglasses & hat

Best months: Jan (9.3), Feb (9.3), Mar (9.3)

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Why December scores 9.1What goes into the score

How it works
🌡️ 28° / 25°C🌧️ 59 mm💧 dew pt 22°🍃 PM2.5 5
  • Weather comfort8.4
    • ✓Warm (28.1°C highs / 24.7°C lows)
    • !Very humid/sticky (dew point 22°C)
    • ✓Mostly dry (~59 mm rain)
  • Air quality10.0
    • ✓Good (within WHO guideline) (PM2.5 ~5 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline—
Compare monthsPut December side by side with another month
DecJan
Score9.1 Excellent9.3 Excellent
Season☀️ Dry season☀️ Dry season
High / low28° / 25°28° / 24°
Rain59 mm46 mm
Humiditydew pt 22°dew pt 21°
PM2.55 µg/m³5 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast).

Holidays & crowdsDecember 2026

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Christmas Day 25–27 Dec · 3 days off in a row

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore San JuanEvents, sights, food & souvenirs

Check event dates locally

Puerto Rico's capital, known for the colourful streets and Spanish forts of Old San Juan, Condado beaches and nearby El Yunque rainforest.

Events in December

No major events on our calendar for December.

Coming up later

Fiestas de la Calle San SebastiánDate variesUsually a weekend in mid-January

A big street festival with music, crafts and parades.

Why go: Very crowded; parking is difficult.

Where: Old San Juan

Three Kings DayEvery year6 January every year

A holiday when children get gifts, near the end of the long Christmas season.

Why go: Public holiday.

Where: Island-wide

Noche de San JuanEvery yearNight of 23 June every year

People walk backwards into the sea at midnight for good luck.

Why go: Beaches get busy.

Where: Beaches

Plan this tripTickets, data and transfers for San Juan

Airport transfer Kiwitaxi

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