Weather: San Juan — December
The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.
🌟 Climate Overview
December is an excellent time to visit San Juan. Warm weather with highs of 28°C—great for outdoor activities. Rain is common, so pack an umbrella. As peak season, expect higher prices and more tourists. Sea temperature of 28°C is perfect for swimming.
Based on weather comfort, crowds, prices, and activity options
28°C
24°C
11days
11h
Feels like 31°C / 27°C — humidity makes it feel warmer
42mm
10.1h/day
80%
Very Humid6.4
High18 km/h (gusts 34)
28°C 🏊 Comfortable
Is December a good time to visit San Juan?
The weather is near-perfect with ideal temperatures and minimal rain.
Now
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Air Quality
Travel Context
- CrowdsVery Busy
- Travel Costs Peak Rates
Daylight
06:49
17:51
Visiting San Juan in December: Pros & Cons
Pros
- Comfortable temperatures for sightseeing
- Abundant sunshine for beach and outdoor fun
- Warm sea perfect for swimming and snorkeling
- One of the best months to visit
Cons
- Peak season — expect crowds and higher prices
Things to Do in December
Recommended for This Weather
San Juan Weather by Month
| Month | Avg High | Avg Low | Rain | Sunshine | Humidity | UV Index | Crowds | Condition |
|---|---|---|---|---|---|---|---|---|
| Jan | 28°C | 24°C | 11d (40mm) | 10.3h | 79% Humid | 6.6 High | | Excellent |
| Feb | 28°C | 23°C | 11d (48mm) | 10.6h | 78% Humid | 7.5 Very High | | Excellent |
| Mar | 28°C | 23°C | 11d (35mm) | 11h | 77% Humid | 8.7 Very High | | Excellent |
| Apr | 29°C | 24°C | 13d (81mm) | 11.4h | 78% Muggy | 9.2 Very High | | Excellent |
| May | 30°C | 25°C | 12d (79mm) | 11.5h | 79% Muggy | 9.4 Very High | | Good |
| Jun | 31°C | 26°C | 12d (58mm) | 12h | 78% Muggy | 9.5 Very High | | Good |
| Jul | 31°C | 26°C | 15d (67mm) | 11.7h | 80% Very Muggy | 9.3 Very High | | Wet |
| Aug | 31°C | 27°C | 16d (88mm) | 11.1h | 80% Very Muggy | 9.1 Very High | | Wet |
| Sep | 31°C | 27°C | 22d (145mm) | 10.6h | 82% Very Muggy | 8.5 Very High | | Wet |
| Oct | 31°C | 26°C | 20d (131mm) | 9.9h | 82% Very Muggy | 7.4 Very High | | Wet |
| Nov | 29°C | 25°C | 17d (94mm) | 9.7h | 82% Very Muggy | 6.5 High | | Wet |
| Dec Current | 28°C | 24°C | 11d (42mm) | 10.1h | 80% Very Humid | 6.4 High | | Excellent |
San Juan
Caribbean capital with 500-year-old colonial Old San Juan, historic Spanish forts, vibrant beaches like Condado and Isla Verde, El Yunque rainforest, bioluminescent bays, and rich Puerto Rican culture blending Spanish, African, and Taíno influences.
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What to Pack for December
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces. A waterproof jacket and shoes are non-negotiable — showers are frequent. Don't forget a wide-brimmed hat and high-SPF sunscreen — the sun is strong.
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Frequently Asked Questions
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More San Juan Guides
Best Time to Visit
Coming soon
Things to Do
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Where to Stay
Best neighborhoods and hotel recommendations
Cost & Budget
Daily costs, money-saving tips, and budget breakdown
Itineraries
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Overview
Complete travel guide for San Juan: top things to do, itineraries, and typical costs.