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San Juan

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San Juan Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

San Juan year round climate

  • Spring (March-May): Average 10.3–17°C, mild climate, but March is slightly warmer and more humid with more rainfall than other spring months. Common activities: Outdoor hiking, sightseeing. Recommended clothing: Light jacket, long-sleeved shirts; rain gear may be needed in March.
  • Summer (June-August): Average 9.4–10.7°C, cool and dry climate with little rainfall. Common activities: Suitable for various outdoor activities such as hiking and camping. Recommended clothing: Warm clothing such as long-sleeved shirts and pants.
  • Autumn (September-November): Average 13.6–22°C, mild climate, September is cooler, and November gradually warms up. Little rainfall. Common activities: Outdoor activities, enjoying autumn scenery. Recommended clothing: Light jacket, long-sleeved shirts.
  • Winter (December-February): Average 23.8–26.2°C, warm climate with slightly more rainfall than other seasons. Common activities: Outdoor activities such as beach activities. Recommended clothing: Light clothing, short or long sleeves are both acceptable, but sun protection is necessary.

San Juan climatological average

Annual average temperature: approx. 17.4°C / Annual rainfall: approx. 93 mm / Summer humidity: 50%–60% / Rainiest month: March

San Juan monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
26.2°C
19.6
February
23.8°C
17.8
March
23°C
20.3
April
17°C
9.7
May
10.3°C
1.2
June
9.6°C
0.2
July
9.4°C
4.9
August
10.7°C
2.8
September
13.6°C
4
October
18.4°C
9
November
22°C
0.7
December
25.1°C
3.3

San Juan weather for the next seven days

10/3
Saturday
Sunny
19.3°C/8.4°C
10/4
Sunday
Overcast
19.2°C/8.2°C
10/5
Monday
Overcast
18.1°C/7.4°C
10/6
Tuesday
Overcast
22.1°C/9.1°C
10/7
Wednesday
Sunny
18.4°C/7.1°C
10/8
Thursday
Sunny
11.5°C/5°C
10/9
Friday
Sunny
14.7°C/3.8°C

San Juan Frequently Asked Questions and Useful Information for Travel

Is it safe to visit San Juan right now?

Yes, San Juan is generally very safe for tourists to visit. Standard travel precautions are recommended, but the city is welcoming to visitors.

Is San Juan worth visiting?

Yes, San Juan is absolutely worth visiting. It offers a rich history, vibrant culture, colorful architecture, and diverse attractions. Explore the historic district of Old San Juan with its colonial buildings and fortresses, enjoy local food and music at places like La Placita de Santurce, and relax at urban beaches. San Juan provides a picturesque step back in time with opportunities to experience authentic Puerto Rican life.

What should I know before going to San Juan, Puerto Rico?

You don't need a passport if you're coming from the U.S. English is widely spoken, but Spanish is also prevalent. The tropical weather means rain is possible year-round. Be prepared for diverse road conditions and remember that the island offers more than you might initially expect.

What is the best month to go to San Juan, Puerto Rico?

The best time to visit San Juan for ideal weather is during the peak season from mid-December to mid-April, offering sunny skies and mild temperatures. The shoulder season from mid-April to June provides a good balance with warm weather and fewer crowds. The low season from August to November can offer lower prices but carries a higher risk of hurricanes, with September being particularly active.

What are the must-see attractions in San Juan?

Key attractions in San Juan include exploring the charming, colorful streets of Old San Juan and visiting UNESCO World Heritage sites like Castillo San Felipe del Morro, a magnificent 16th-century citadel. Experience the lively culture with delicious cuisine and vibrant music. Enjoy picturesque views from historical forts or relax at urban beaches such as Playa Escambron. Indulge in local cuisine, including dishes like mofongo, and discover unique dining experiences in Old San Juan.