Cities / Puerto Rico / San Juan

34°

☁️ Isla Grande weather

Overcast. Light rain starting around 1:30pm.

Feels like 39° Wind 18 km/h E Humidity 51% UV 1 Air Good ☀ 06:10 - 18:34
⚠ Extreme Heat Warning · Severe

Extreme Heat Warning issued September 6 at 10:45AM AST until September 6 at 5:00PM AST by NWS San Juan PR

Right now it is 34° in Isla Grande with overcast skies, it feels more like 39°, today's high is 34° with an overnight low of 26° and about 1.8 mm of rain is expected. The sun rises at 06:10 and sets at 18:34, giving 12h 24m of daylight. Over the coming week highs range from 32° to 34° - a steady stretch with little day-to-day change.

Isla Grande is in San Juan, Puerto Rico, sitting 6 m above sea level. Local time is America/Puerto_Rico (UTC−4), and every time on this page is shown in it.

Next 24 hours - temperature

25° 30° 35° 34° 26° 13:00 · 34.1° · 0 mm 14:00 · 34.2° · 0.2 mm 15:00 · 34.1° · 0.8 mm 16:00 · 33.1° · 0 mm 17:00 · 31.7° · 0 mm 18:00 · 30.4° · 0 mm 19:00 · 28.9° · 0.5 mm 20:00 · 27.9° · 0.2 mm 21:00 · 27.2° · 0 mm 22:00 · 26.9° · 0 mm 23:00 · 26.7° · 0.1 mm 00:00 · 26.5° · 0 mm 01:00 · 26.4° · 0 mm 02:00 · 26.3° · 0 mm 03:00 · 26.3° · 0 mm 04:00 · 26.3° · 0 mm 05:00 · 26.1° · 0 mm 06:00 · 25.9° · 0 mm 07:00 · 26.7° · 0 mm 08:00 · 28.7° · 0 mm 09:00 · 30.4° · 0 mm 10:00 · 32° · 0 mm 11:00 · 33.4° · 0 mm 12:00 · 34.1° · 0 mm

Precipitation

13:00 · 0 mm 13:00 14:00 · 0.2 mm 15:00 · 0.8 mm 16:00 · 0 mm 16:00 17:00 · 0 mm 18:00 · 0 mm 19:00 · 0.5 mm 19:00 20:00 · 0.2 mm 21:00 · 0 mm 22:00 · 0 mm 22:00 23:00 · 0.1 mm 00:00 · 0 mm 01:00 · 0 mm 01:00 02:00 · 0 mm 03:00 · 0 mm 04:00 · 0 mm 04:00 05:00 · 0 mm 06:00 · 0 mm 07:00 · 0 mm 07:00 08:00 · 0 mm 09:00 · 0 mm 10:00 · 0 mm 10:00 11:00 · 0 mm 12:00 · 0 mm

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
13:00 ☁️ 34.1° 35.9° - Overcast
14:00 🌦️ 34.2° 35.4° 0.2 mm Light rain
15:00 🌦️ 34.1° 34.8° 0.8 mm Light rain
16:00 🌤️ 33.1° 33.5° - Mostly clear
17:00 ☁️ 31.7° 32.8° - Overcast
18:00 ☁️ 30.4° 32.4° - Overcast
19:00 🌦️ 28.9° 32° 0.5 mm Light rain
20:00 🌦️ 27.9° 31.4° 0.2 mm Light rain
21:00 ☁️ 27.2° 31° - Overcast
22:00 🌤️ 26.9° 31° - Mostly clear
23:00 🌦️ 26.7° 31.1° 0.1 mm Light rain
00:00 ⛅ 26.5° 31° - Partly cloudy

Next 16 days

Today🌦️ 34°26°1.8mm Mon 7☀️ 34°26° Tue 8🌦️ 33°25°0.3mm Wed 9🌦️ 32°25°0.7mm Thu 10🌦️ 33°25°4.7mm Fri 11☀️ 34°25° Sat 12☀️ 33°25° Sun 13☀️ 32°26°0.9mm Mon 14🌦️ 33°25°0.6mm Tue 15☁️ 33°25°0.3mm Wed 16🌧️ 35°25°14.1mm Thu 17☁️ 31°26° Fri 18🌦️ 31°25°1.2mm Sat 19⛅ 34°25°0.3mm Sun 20☁️ 34°25° Mon 21⛅ 35°25°
🌦️ TodaySeptember 6th Avg 29° Low 26° at 06:00 High 34° at 14:00 1.8 mm rain Feels 36° Wind ~23 km/h
Cloudy
00:00 27°
02:00 26°
04:00 26°
06:00 26°
08:00 28°
10:00 32°
12:00 34°
14:00 34° 0.2mm
16:00 33°
18:00 30°
20:00 28° 0.2mm
22:00 27°
☀️ MondaySeptember 7th Avg 29° Low 26° at 06:00 High 34° at 13:00 Wind ~23 km/h
Partly Cloudy Cloudy Partly Cloudy
00:00 27°
02:00 26°
04:00 26°
06:00 26°
08:00 29°
10:00 32°
12:00 34°
14:00 34°
16:00 33°
18:00 30°
20:00 28°
22:00 27°
🌦️ TuesdaySeptember 8th Avg 29° Low 25° at 06:00 High 33° at 13:00 0.3 mm rain Wind ~27 km/h
Clear Clear Partly Cloudy
00:00 26°
02:00 26°
04:00 26°
06:00 25°
08:00 29°
10:00 31°
12:00 33°
14:00 33°
16:00 32°
18:00 30°
20:00 27°
22:00 26° 0.2mm
🌦️ WednesdaySeptember 9th Avg 28° Low 25° at 06:00 High 32° at 12:00 0.7 mm rain Wind ~25 km/h
Clear Clear Rain
00:00 26°
02:00 25°
04:00 25°
06:00 25°
08:00 28°
10:00 31° 0.1mm
12:00 32°
14:00 32°
16:00 32°
18:00 29°
20:00 27°
22:00 26° 0.1mm
🌦️ ThursdaySeptember 10th Avg 29° Low 25° at 06:00 High 33° at 13:00 4.7 mm rain Wind ~24 km/h
Rain Rain Cloudy Rain
00:00 26° 0.3mm
02:00 26° 0.3mm
04:00 26° 0.3mm
06:00 25° 0.2mm
08:00 28°
10:00 32° 0.3mm
12:00 33° 0.9mm
14:00 33°
16:00 32°
18:00 29°
20:00 27°
22:00 26° 0.1mm
☀️ FridaySeptember 11th Avg 29° Low 25° at 04:00 High 34° at 13:00 Wind ~25 km/h
Partly Cloudy Clear
00:00 26°
02:00 25°
04:00 25°
06:00 26°
08:00 28°
10:00 32°
12:00 34°
14:00 34°
16:00 32°
18:00 29°
20:00 26°
22:00 26°
☀️ SaturdaySeptember 12th Avg 28° Low 25° at 04:00 High 33° at 13:00 Wind ~27 km/h
Clear Partly Cloudy Clear
00:00 26°
02:00 25°
04:00 25°
06:00 26°
08:00 29°
10:00 31°
12:00 33°
14:00 33°
16:00 32°
18:00 29°
20:00 26°
22:00 26°
☀️ SundaySeptember 13th Avg 28° Low 26° at 00:00 High 32° at 13:00 0.9 mm rain Wind ~26 km/h
Partly Cloudy Rain Clear Rain
00:00 26°
02:00 26°
04:00 26°
06:00 27° 0.1mm
08:00 29° 0.1mm
10:00 31°
12:00 32°
14:00 32°
16:00 31°
18:00 29° 0.1mm
20:00 27° 0.1mm
22:00 26° 0.1mm
🌦️ MondaySeptember 14th Avg 28° Low 25° at 04:00 High 33° at 13:00 0.6 mm rain Wind ~26 km/h
Clear Rain
00:00 26°
02:00 25°
04:00 25°
06:00 26°
08:00 28°
10:00 31°
12:00 33°
14:00 33°
16:00 32°
18:00 29°
20:00 27°
22:00 26° 0.2mm
☁️ TuesdaySeptember 15th Avg 28° Low 25° at 04:00 High 33° at 13:00 0.3 mm rain Wind ~28 km/h
Cloudy Rain Cloudy Partly Cloudy Cloudy
00:00 26°
02:00 25°
04:00 25° 0.1mm
06:00 26°
08:00 29°
10:00 31°
12:00 32°
14:00 32°
16:00 31°
18:00 29°
20:00 27°
22:00 26°
🌧️ WednesdaySeptember 16th Avg 29° Low 25° at 04:00 High 35° at 13:00 14.1 mm rain Feels 41° Wind ~23 km/h
Cloudy Rain Cloudy
00:00 26°
02:00 26°
04:00 25°
06:00 26° 0.6mm
08:00 29° 0.6mm
10:00 32° 2.8mm
12:00 34° 0.4mm
14:00 35° 0.4mm
16:00 33° 0.8mm
18:00 30° 0.1mm
20:00 27° 0.1mm
22:00 26°
☁️ ThursdaySeptember 17th Avg 28° Low 26° at 04:00 High 31° at 15:00 Feels 34° Wind ~18 km/h
Cloudy Partly Cloudy Cloudy
00:00 26°
02:00 26°
04:00 26°
06:00 27°
08:00 29°
10:00 28°
12:00 29°
14:00 31°
16:00 31°
18:00 29°
20:00 27°
22:00 27°
🌦️ FridaySeptember 18th Avg 27° Low 25° at 06:00 High 31° at 12:00 1.2 mm rain Feels 36° Wind ~13 km/h
Cloudy Rain Cloudy Rain
00:00 26°
02:00 25°
04:00 25° 0.2mm
06:00 25° 0.1mm
08:00 25° 0.1mm
10:00 29°
12:00 31°
14:00 30°
16:00 29°
18:00 28°
20:00 27°
22:00 26° 0.1mm
⛅ SaturdaySeptember 19th Avg 29° Low 25° at 04:00 High 34° at 13:00 0.3 mm rain Wind ~22 km/h
Cloudy Rain Partly Cloudy Cloudy
00:00 25°
02:00 25°
04:00 25° 0.1mm
06:00 26°
08:00 28°
10:00 32°
12:00 34°
14:00 34°
16:00 33°
18:00 30°
20:00 27°
22:00 26°
☁️ SundaySeptember 20th Avg 29° Low 25° at 04:00 High 34° at 14:00 Wind ~23 km/h
Cloudy Partly Cloudy Cloudy
00:00 26°
02:00 25°
04:00 25°
06:00 26°
08:00 29°
10:00 31°
12:00 33°
14:00 34°
16:00 33°
18:00 31°
20:00 27°
22:00 26°
⛅ MondaySeptember 21st Avg 29° Low 25° at 04:00 High 35° at 14:00 Wind ~23 km/h
Cloudy Clear Partly Cloudy Cloudy
00:00 26°
02:00 26°
04:00 25°
06:00 26°
08:00 28°
10:00 31°
12:00 34°
14:00 35°
16:00 33°
18:00 30°
20:00 27°
22:00 26°

Sun

☀️ Sunrise 06:10 · Sunset 18:34

12h 24m of daylight · America/Puerto_Rico

Air quality

PM2.5 5.6 µg/m³ - Good

No reason to change your plans - open the windows.

Source: Copernicus CAMS, updated hourly.

Nearby

Miramar · 1.2 km Puerts de Tierra · 1.4 km San Juan · 1.8 km Tras Talleres · 1.9 km Vietnam · 2.6 km Viejo San Juan · 2.6 km

Tools for Isla Grande

☔ Will it rain today? 🌅 Sunrise & sunset 🫁 Air quality 📼 Weather on this day

Common questions about Isla Grande weather

Will it rain in Isla Grande today?

Yes - about 1.8 mm of rain is expected in Isla Grande today.

What is the temperature in Isla Grande right now?

It is 34° in Isla Grande right now, though it feels closer to 39°. Today runs between a low of 26° and a high of 34°.

What time is sunrise and sunset in Isla Grande?

The sun rises at 06:10 and sets at 18:34 local time in Isla Grande today, giving 12h 24m of daylight.

What is the air quality in Isla Grande?

PM2.5 in Isla Grande is currently 5.6 µg/m³, which counts as Good on the European air-quality index. No reason to change your plans - open the windows.

How accurate is the Isla Grande forecast, and how far ahead does it go?

This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers Isla Grande best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.

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