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Weather in San Juan, Puerto Rico 🇵🇷

Current Weather in San Juan

Patchy rain nearby
28°C
Feels like 32°C. Patchy rain nearby.
🌬️ 18 km/h E
💧 79% Humidity
🧭 1015 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.0
🌡️ Dew Point: 24°C
🌅 Sunrise: 06:12 AM
🌇 Sunset: 06:24 PM
Map Overlays:

As of now, San Juan is 28°C and patchy rain nearby, feeling like 32°C. Relative humidity is 79%, with winds around 18 km/h, and the UV index is 0 (low). Looking ahead, San Juan should sit between roughly 26°C and 31°C over the coming days.

Hourly Forecast for San Juan

22:00
Patchy rain nearby
28°
16%
23:00
Patchy rain nearby
28°
24%
00:00
Patchy rain nearby
27°
22%
01:00
Light rain shower
27°
29%
02:00
Patchy rain nearby
27°
25%
03:00
Patchy rain nearby
27°
20%
04:00
Patchy rain nearby
27°
29%
05:00
Patchy rain nearby
27°
24%
06:00
Patchy rain nearby
27°
24%
07:00
Patchy rain nearby
27°
25%
08:00
Cloudy
28°
14%
09:00
Partly Cloudy
29°
8%
10:00
Overcast
29°
16%
11:00
Patchy rain nearby
30°
13%
12:00
Sunny
30°
6%
13:00
Sunny
30°
6%
14:00
Partly Cloudy
30°
7%
15:00
Sunny
30°
5%
16:00
Partly Cloudy
30°
8%
17:00
Cloudy
29°
14%
18:00
Overcast
29°
19%
19:00
Overcast
28°
20%
20:00
Overcast
28°
23%
21:00
Overcast
28°
24%

14-Day Forecast for San Juan

Fri, Sep 18
Patchy rain nearby Patchy rain nearby
31° / 27°
Sat, Sep 19
Patchy rain nearby Patchy rain nearby
30° / 27°
Sun, Sep 20
Overcast Overcast
30° / 26°
Mon, Sep 21
Sunny Sunny
31° / 26°
Tue, Sep 22
Sunny Sunny
30° / 26°
Wed, Sep 23
Cloudy Cloudy
30° / 26°
Thu, Sep 24
Patchy rain nearby Patchy rain nearby
30° / 27°
Fri, Sep 25
Patchy rain nearby Patchy rain nearby
31° / 26°
Sat, Sep 26
Patchy rain nearby Patchy rain nearby
31° / 27°
Sun, Sep 27
Patchy rain nearby Patchy rain nearby
31° / 27°
Mon, Sep 28
Patchy rain nearby Patchy rain nearby
31° / 26°
Tue, Sep 29
Patchy rain nearby Patchy rain nearby
30° / 26°
Wed, Sep 30
Patchy rain nearby Patchy rain nearby
31° / 26°
Thu, Oct 01
Overcast Overcast
31° / 26°

Additional Forecasts for San Juan

Air Quality

💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 98.0 μg/m³
O₃ (Ozone) 36.0 μg/m³
NO₂ (Nitrogen Dioxide) 0.8 μg/m³
SO₂ (Sulphur Dioxide) 0.5 μg/m³
PM2.5 (Fine particles) 3.5 μg/m³
PM10 (Coarse particles) 7.1 μg/m³

Historical Weather

Weather Forecasts for Other Cities in Puerto Rico

Browse Weather in Puerto Rico by cities in alphabetical order:

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Weather in Puerto Rico ›

Best Time to Be Outside in San Juan Tomorrow

There is no good daylight window left in San Juan today. Tomorrow, the most comfortable window looks like 07:00 to 10:00, when it is around 28°C. It should stay dry through that window. No significant rain is expected in the next several hours.

Frequently Asked Questions about Weather in San Juan

What is the temperature in San Juan right now?

San Juan is sitting at 28°C (82°F) right now, patchy rain nearby (feels like 32°C).

What's the weather like in San Juan right now?

Current weather in San Juan: Patchy rain nearby, humidity 79%, wind 18 km/h E.

What is today's forecast for San Juan?

Today in San Juan: high 31°C, low 27°C, patchy rain nearby. Chance of rain: 57%.

What is the 7-day weather forecast for San Juan?

Daily highs and lows for San Juan:

  • 2026-09-18: 31°C / 27°C
  • 2026-09-19: 30°C / 27°C
  • 2026-09-20: 30°C / 26°C
  • 2026-09-21: 31°C / 26°C
  • 2026-09-22: 30°C / 26°C
  • 2026-09-23: 30°C / 26°C
  • 2026-09-24: 30°C / 27°C
Is it going to rain in San Juan today?

There is a 57% chance of rain in San Juan today. Total expected precipitation: 1.15 mm.

What is the wind speed in San Juan right now?

Wind in San Juan is currently 18 km/h (11 mph) from the E.

What is the UV index in San Juan right now?

The UV index in San Juan is currently 0 (low). Sun protection is recommended when the index is 3 or higher.

Weather forecasts for other major cities in 🇵🇷 Puerto Rico: San Juan · Bayamón · Carolina · Ponce · Arecibo · Caguas · Guaynabo · Trujillo Alto · Mayagüez · Fajardo · Vega Baja · Cataño · Barceloneta · Guayama · Humacao · Yauco · Cayey · Aguadilla