Best Time to Visit
Best Time to Visit San Juan
🇵🇷 San Juan, Puerto Rico · North America
Based on 30-year climate data (1991-2020) from Open-Meteo
Recommended Travel Months
Jan
28°
21°
Great
Feb
29°
22°
Good
Mar
30°
23°
Great
Apr
31°
24°
Great
May
32°
25°
Great
Jun
32°
25°
Great
Jul
32°
25°
Great
Aug
31°
24°
Great
Sep
30°
23°
Great
Oct
29°
22°
Good
Nov
28°
21°
Great
Dec
28°
21°
Great
Month-by-Month Weather in San Juan
| Month | High | Low | Rain Days | Sunshine | Humidity | UV | Rating | Details |
|---|---|---|---|---|---|---|---|---|
| JanuaryRecommended | 28°C | 21°C | 7 | 1h | 78% | 3 | Great | View |
| February | 29°C | 22°C | 9 | 3h | 78% | 3 | Good | View |
| MarchRecommended | 30°C | 23°C | 12 | 4h | 78% | 6 | Great | View |
| AprilRecommended | 31°C | 24°C | 15 | 6h | 78% | 6 | Great | View |
| MayRecommended | 32°C | 25°C | 17 | 7h | 78% | 9 | Great | View |
| JuneRecommended | 32°C | 25°C | 18 | 7h | 78% | 9 | Great | View |
| JulyRecommended | 32°C | 25°C | 17 | 7h | 78% | 9 | Great | View |
| AugustRecommended | 31°C | 24°C | 15 | 6h | 78% | 9 | Great | View |
| SeptemberRecommended | 30°C | 23°C | 12 | 4h | 78% | 6 | Great | View |
| October | 29°C | 22°C | 9 | 3h | 78% | 6 | Good | View |
| NovemberRecommended | 28°C | 21°C | 7 | 1h | 78% | 3 | Great | View |
| DecemberRecommended | 28°C | 21°C | 6 | 1h | 78% | 3 | Great | View |
Data source: Open-Meteo ERA5 reanalysis archive, 30-year historical normals (1991-2020). Temperatures in Celsius. Sunshine hours are daily averages.
Seasonal Guide to San Juan
Spring (March to May)
Avg: 31°C high, 24°C low
Spring in San Juan brings gradually warm temperatures. Daytime highs reach around 31°C (88°F) while nights cool to 24°C (75°F). This is one of the wetter periods, so waterproof gear is recommended.
Summer (June to August)
Avg: 32°C high, 25°C low
Summer is the hottest season in San Juan, with temperatures reaching 32°C (90°F). The heat can be intense, but mornings and evenings remain pleasant for sightseeing. Long daylight hours and abundant sunshine provide plenty of time to explore.
Fall (September to November)
Avg: 29°C high, 22°C low
Fall in San Juan is one of the best times to visit. Temperatures settle around 29°C (84°F) during the day and 22°C (72°F) at night. Rainfall increases slightly, but comfortable temperatures make up for it. Fewer tourists mean better prices.
Winter (December to February)
Avg: 28°C high, 21°C low
Winter in San Juan brings the cooler period, though temperatures remain warm by most standards. This can actually be one of the most comfortable times to visit if you prefer less intense heat.
When to Avoid San Juan
The least favorable time to visit San Juan is February and October. During this period, you can expect very limited sunshine.
February
Challenges: very limited sunshine
October
Challenges: very limited sunshine
March
Challenges: frequent rain
Note: visiting during off-peak months often means lower prices, fewer crowds, and a more authentic experience. Consider your priorities when planning your trip.
What to Pack for San Juan
Packing recommendations for visiting San Juan during the best travel months (January, November, December), when temperatures range from 21°C to 28°C:
- +Lightweight, breathable clothing (cotton or linen)
- +Shorts, t-shirts, and sandals for daytime
- +A compact umbrella or light rain jacket
- +Reusable water bottle
- +Universal power adapter
San Juan Year-Round Climate Overview
San Juan has a tropical climate (Koppen classification: Am). The warmest month is July with highs of 32°C, while the coldest month is December at just 28°C. Annual rainfall averages 1680mm across approximately 144 rain days.
| Metric | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 28 | 29 | 30 | 31 | 32 | 32 | 32 | 31 | 30 | 29 | 28 | 28 |
| Low °C | 21 | 22 | 23 | 24 | 25 | 25 | 25 | 24 | 23 | 22 | 21 | 21 |
| Rain Days | 7 | 9 | 12 | 15 | 17 | 18 | 17 | 15 | 12 | 9 | 7 | 6 |
| Rain mm | 79 | 105 | 140 | 175 | 201 | 210 | 201 | 175 | 140 | 105 | 79 | 70 |
| Sun h/day | 1 | 3 | 4 | 6 | 7 | 7 | 7 | 6 | 4 | 3 | 1 | 1 |
| Humidity % | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 | 78 |
| UV Index | 3 | 3 | 6 | 6 | 9 | 9 | 9 | 9 | 6 | 6 | 3 | 3 |
Compare Nearby Destinations
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Frequently Asked Questions
What is the best month to visit San Juan?+
The best time to visit San Juan is January, November, December. During these months, temperatures average 28°C (82°F) with 1 hours of daily sunshine and only 7 rain days per month. These conditions offer the most comfortable weather for sightseeing and outdoor activities.
What is the worst time to visit San Juan?+
The least ideal time to visit San Juan is February and October. During this period, you can expect very limited sunshine. While San Juan can still be visited during this time (often with fewer crowds and lower prices), the weather may limit outdoor activities.
Is San Juan good to visit in summer?+
Summer in San Juan (June to August) brings temperatures of 32°C (90°F) highs and 25°C (77°F) lows, with about 7 hours of sunshine and 17 rain days per month. This is generally a good time to visit.
What is the rainy season in San Juan?+
The rainy season in San Juan runs from April to August, when average rain days increase to 16 days per month. Total monthly precipitation during this period averages 192mm.
What should I pack for San Juan?+
When visiting San Juan during the best travel months (January, November, December), pack lightweight breathable clothing, sun protection, and comfortable walking shoes. Bring a compact umbrella just in case. Sunscreen and sunglasses are recommended.
Is January a good time to visit San Juan?+
Yes, January is one of the best months to visit San Juan. Expect average highs of 28°C (82°F), 1 hours of daily sunshine, and only 7 rain days. The weather is ideal for exploring the city, visiting outdoor attractions, and enjoying local activities.
Detailed Monthly Weather for San Juan
For a complete day-by-day weather breakdown including packing lists, activities, and local events, explore each month individually:
January
February
March
April
May
June
July
August
September
October
November
December
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