San Juan, Argentina Weather

  1. San Juan, Argentina Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in San Juan over the next 12 hours
  7. Temperature and possibility of rain in San Juan in the coming days
  8. Rainfall in San Juan in the coming days
  9. San Juan Weather Summary
  10. Weather averages by month
  11. San Juan's weather
  12. Frequently asked questions
  13. Comments
San Juan, Weather
(Photo by Sasha • Stories on Unsplash)

Current conditions

Updated:
30°C
86.0°F
°C °F

Condition: Clear Sky

Pressure: 935 hPa

Feel like: 30 °C

Temperature: 30°C

Cloud: 13%

Humidity: 18%

Wind: NNE - 11 km/h

Visibility: 57.38 km

Weather forecast

Fri
06 Nov
13°C / 24°C
Partly Cloudy
Sat
07 Nov
12°C / 27°C
Overcast
Sun
08 Nov
14°C / 29°C
Clear Sky
Mon
09 Nov
17°C / 31°C
Drizzle
Tue
10 Nov
16°C / 33°C
Drizzle
Hourly forecast today:
16:00 PM
4° / 30°
4° / 30°
Clear Sky
18% 33 km/h
17:00 PM
3° / 32°
3° / 32°
Clear Sky
16% 34 km/h
18:00 PM
3° / 32°
3° / 32°
Clear Sky
15% 36 km/h
19:00 PM
4° / 33°
4° / 33°
Clear Sky
16% 35 km/h
20:00 PM
4° / 32°
4° / 32°
Mainly Clear
17% 30 km/h
21:00 PM
4° / 32°
4° / 32°
Mainly Clear
16% 27 km/h
22:00 PM
1° / 31°
1° / 31°
Mainly Clear
14% 28 km/h
23:00 PM
-1° / 29°
-1° / 29°
Mainly Clear
14% 24 km/h
00:00 AM
0° / 27°
0° / 27°
Mainly Clear
15% 12 km/h
01:00 AM
0° / 26°
0° / 26°
Mainly Clear
17% 5 km/h
02:00 AM
0° / 25°
0° / 25°
Clear Sky
18% 7 km/h

30 Day Averages and Extremes

  • Average high 29.17°C
  • Average low 16.23°C
  • Hottest day 36°C (11 November 2026)
  • Coldest day 8°C (25 October 2026)
  • Average humidity 37.8%
  • Days with precipitation 12 days
  • Highest precipitation 31 mm (24 October 2026)

Yesterday's Data

  • Max: 25°C
  • Min: 15°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in San Juan over the next 12 hours

Temperature and possibility of rain in San Juan in the coming days

Rainfall in San Juan in the coming days

San Juan Climate Summary

San Juan features a Mid-latitude desert (Köppen classification: BWk), with an average annual temperature of 18.77ºC (65.79ºF), which is about 0.53% higher than the national average for Argentina. Annually, the city experiences approximately 8.02 millimeters (0.32 inches) of rainfall, spread across 24.17 rainy days, accounting for 6.62% of the year.

Longitude -31.5287127
Latitude -68.5360403
Yearly high temperature 23.31ºC (73.96ºF)
Yearly low temperature 12.48ºC (54.46ºF)
Hottest month January 30.65ºC (87.17ºF)
Coldest month July 4.77ºC (40.59ºF)
Yearly precip 8.02mm (0.32in)
Days with rainfall 24.17 days (6.62%)
Driest month August (36.33%)
Wettest month January (39.06%)

Weather averages by month

Month High / Low (°C) Rain
January 30.65° / 19.74° 6.18 days
February 29.16° / 18.79° 4.36 days
March 26.64° / 16.17° 2.64 days
April 22.75° / 12.58° 1.0 days
May 18.88° / 9.26° 0.36 days
June 16.02° / 6.16° 0.27 days
July 14.71° / 4.77° 0.36 days
August 18.29° / 7.28° 0.18 days
September 21.12° / 9.44° 0.45 days
October 23.97° / 11.97° 0.82 days
November 27.5° / 15.48° 2.82 days
December 30.02° / 18.11° 4.73 days

San Juan's weather

Frequently asked questions

1. What is the hottest month in San Juan?

January has the highest average monthly temperature (daily mean of 30.65ºC) and July are the coolest (daily mean of 4.77ºC).

2. What should I wear in San Juan today?

For today's very hot weather in San Juan, with the high temperatures above 33ºC (91.4ºF), consider wearing:
- Sleeveless tops or vests
- UV-blocking sunglasses
- Airy sandals or flip-flops
- Ultra-thin, breathable socks

Temperature

Early
3°C / 20°C
Morning
6°C / 15°C
Afternoon
4°C / 28°C
Evening
4°C / 32°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 442
  • CO 111
  • NH3 0
  • NO2 0
  • O3 92
  • PM10 127
  • PM25 14
  • SO2 0
  • CH4 1,307

Sunrise / Sunset

09:34
23:02