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:
7°C
44.6°F
°C °F

Condition: Clear Sky

Pressure: 936 hPa

Feel like: 4 °C

Temperature: 7°C

Cloud: 4%

Humidity: 64%

Wind: WSW - 3 km/h

Visibility: 4.48 km

Weather forecast

Sun
02 Aug
7°C / 23°C
Overcast
Mon
03 Aug
9°C / 18°C
Partly Cloudy
Tue
04 Aug
8°C / 19°C
Overcast
Wed
05 Aug
7°C / 32°C
Partly Cloudy
Thu
06 Aug
8°C / 21°C
Mainly Clear
Hourly forecast today:
10:00 AM
0° / 7°
0° / 7°
Clear Sky
64% 5 km/h
11:00 AM
0° / 7°
0° / 7°
Clear Sky
60% 9 km/h
12:00 PM
0° / 7°
0° / 7°
Clear Sky
59% 6 km/h
13:00 PM
1° / 11°
1° / 11°
Clear Sky
48% 6 km/h
14:00 PM
0° / 14°
0° / 14°
Clear Sky
38% 15 km/h
15:00 PM
3° / 15°
3° / 15°
Clear Sky
42% 21 km/h
16:00 PM
2° / 17°
2° / 17°
Clear Sky
35% 22 km/h
17:00 PM
1° / 19°
1° / 19°
Mainly Clear
30% 21 km/h
18:00 PM
0° / 20°
0° / 20°
Mainly Clear
27% 19 km/h
19:00 PM
0° / 21°
0° / 21°
Mainly Clear
24% 18 km/h
20:00 PM
-3° / 22°
-3° / 22°
Mainly Clear
17% 20 km/h

30 Day Averages and Extremes

  • Average high 19.27°C
  • Average low 7.37°C
  • Hottest day 32°C (05 August 2026)
  • Coldest day 3°C (23 July 2026)
  • Average humidity 56.6%
  • Days with precipitation 8 days
  • Highest precipitation 56 mm (18 July 2026)

Yesterday's Data

  • Max: 25°C
  • Min: 6°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 warm weather in San Juan, with temperatures between 19ºC to 22ºC (66.2ºF to 71.6ºF), you might consider wearing:
- Sunscreen (if spending time outdoors)
- Sunglasses
- T-shirt or short-sleeve blouse
- Shorts or lightweight trousers

Temperature

Early
2°C / 11°C
Morning
1°C / 7°C
Afternoon
3°C / 15°C
Evening
-1°C / 21°C

Air quality

Moderate

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

  • CO2 450
  • CO 142
  • NH3 0
  • NO2 7
  • O3 38
  • PM10 44
  • PM25 8
  • SO2 2
  • CH4 1,314

Sunrise / Sunset

11:22
21:59