Current Conditions

San Juan, San Juan

77°F25°C
Drizzle

Wind

E 6 mph9 km/h

Humidity

91%

Cloud Cover

50%

As of Monday, October 12, 2026 at 4:15 AM AST

Today's Outlook

Night

Mostly clear, with a low around 78°F26°C. Light wind from the E around 6 mph9 km/h. 12% chance of drizzle overnight.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
DrizzleHigh 79°F26°CLow 78°F26°CPrecip 0.01 in0.2 mm12%Cloud 23%Wind E 6 mph9 km/hSunday Night: Mostly clear, with a low around 78°F26°C. Light wind from the E around 6 mph9 km/h. 12% chance of drizzle overnight.
ShowersHigh 85°F30°CFeels 94°F34°CLow 77°F25°CPrecip 0.14 in3.6 mm84%Cloud 50%Wind E 6 mph10 km/hMonday: Partly cloudy and warm, with a high of 85°F30°C and morning low of 78°F26°C — feels like 93°F34°C. Breezy from the E at 7 to 8 mph11 to 13 km/h. 84% chance of showers in the morning. Heavy, humid air. Monday Night: Mostly cloudy, with a low around 77°F25°C. Light wind from the E around 5 mph8 km/h. 28% chance of drizzle overnight.
Light RainHigh 84°F29°CFeels 93°F34°CLow 78°F25°CPrecip 0.17 in4.2 mm85%Cloud 92%Wind E 5 mph8 km/hTuesday: Overcast and warm, with a high of 84°F29°C and morning low of 79°F26°C — feels like 93°F34°C. Light wind from the E around 6 mph9 km/h. 85% chance of light rain in the morning. Heavy, humid air. Tuesday Night: Overcast, with a low around 78°F25°C. Light wind from the ENE around 4 mph7 km/h. 28% chance of drizzle in the evening.
Light RainHigh 84°F29°CFeels 93°F34°CLow 78°F25°CPrecip 0.13 in3.2 mm89%Cloud 95%Wind E 6 mph9 km/hWednesday: Overcast and warm, with a high of 84°F29°C and morning low of 79°F26°C — feels like 93°F34°C. Breezy from the E at 6 to 8 mph10 to 13 km/h. 89% chance of light rain in the morning. Heavy, humid air. Wednesday Night: Overcast, with a low around 78°F25°C. Light wind from the E around 5 mph8 km/h. 33% chance of drizzle overnight.
ShowersHigh 86°F30°CFeels 95°F35°CLow 78°F26°CPrecip 0.07 in1.9 mm84%Cloud 61%Wind E 7 mph11 km/hThursday: Mostly cloudy and warm, with a high of 86°F30°C and morning low of 79°F26°C — feels like 95°F35°C. Breezy from the E at 8 to 9 mph12 to 14 km/h. 84% chance of showers in the morning. Heavy, humid air. Thursday Night: Mostly cloudy, with a low around 78°F26°C. Breezy from the E at 6 to 7 mph9 to 11 km/h. 19% chance of drizzle overnight.
DrizzleHigh 85°F30°CFeels 93°F34°CLow 78°F26°CPrecip 0.06 in1.5 mm72%Cloud 32%Wind E 7 mph11 km/hFriday: Partly cloudy and warm, with a high of 85°F30°C and morning low of 79°F26°C — feels like 93°F34°C. Breezy from the E at 8 to 10 mph13 to 15 km/h. 72% chance of drizzle around midday. Heavy, humid air. Friday Night: Partly cloudy, with a low around 78°F26°C. Breezy from the E at 6 to 7 mph10 to 11 km/h. 15% chance of drizzle in the evening.
ShowersHigh 85°F29°CFeels 93°F34°CLow 78°F25°CPrecip 0.08 in2 mm75%Cloud 37%Wind ESE 6 mph10 km/hSaturday: Partly cloudy and warm, with a high of 85°F29°C and morning low of 79°F26°C — feels like 93°F34°C. Breezy from the E at 7 to 9 mph12 to 14 km/h. 75% chance of showers around midday. Heavy, humid air. Saturday Night: Partly cloudy, with a low around 78°F25°C. Light wind from the ESE around 6 mph9 km/h. 15% chance of drizzle in the evening.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
SundayOct 1179°F26°C78°F26°C0.01 in0.2 mm· 12%23%DrizzleE 6 mph9 km/h
MondayOct 1285°F30°C
Feels 94°F34°C
77°F25°C0.14 in3.6 mm· 84%50%ShowersE 6 mph10 km/h
TuesdayOct 1384°F29°C
Feels 93°F34°C
78°F25°C0.17 in4.2 mm· 85%92%Light RainE 5 mph8 km/h
WednesdayOct 1484°F29°C
Feels 93°F34°C
78°F25°C0.13 in3.2 mm· 89%95%Light RainE 6 mph9 km/h
ThursdayOct 1586°F30°C
Feels 95°F35°C
78°F26°C0.07 in1.9 mm· 84%61%ShowersE 7 mph11 km/h
FridayOct 1685°F30°C
Feels 93°F34°C
78°F26°C0.06 in1.5 mm· 72%32%DrizzleE 7 mph11 km/h
SaturdayOct 1785°F29°C
Feels 93°F34°C
78°F25°C0.08 in2 mm· 75%37%ShowersESE 6 mph10 km/h
SundayOct 1885°F29°C
Feels 93°F34°C
78°F25°C0.09 in2.3 mm· 81%42%ShowersESE 6 mph10 km/h
MondayOct 1985°F29°C
Feels 93°F34°C
78°F25°C0.09 in2.2 mm· 75%40%ShowersESE 6 mph10 km/h
TuesdayOct 2085°F29°C
Feels 92°F34°C
78°F25°C0.08 in2 mm· 66%43%ShowersSE 5 mph8 km/h
WednesdayOct 2185°F29°C
Feels 92°F34°C
77°F25°C0.09 in2.3 mm· 67%48%ShowersSSE 5 mph8 km/h
ThursdayOct 2284°F29°C
Feels 92°F33°C
77°F25°C0.13 in3.3 mm· 70%62%ShowersS 5 mph7 km/h
FridayOct 2384°F29°C
Feels 91°F33°C
77°F25°C0.16 in4 mm· 65%66%ShowersSSE 5 mph8 km/h
SaturdayOct 2484°F29°C
Feels 92°F33°C
78°F25°C0.18 in4.6 mm· 65%67%ShowersSSE 5 mph8 km/h
SundayOct 2584°F29°C
Feels 92°F33°C
78°F25°C0.19 in4.8 mm· 64%66%ShowersSE 5 mph8 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 18.4663°N, 66.1057°W·Elevation: 7m·Timezone: America/Puerto_Rico·Population: 418,140