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: Overcast

Pressure: 935 hPa

Feel like: 5 °C

Temperature: 7°C

Cloud: 82%

Humidity: 75%

Wind: ESE - 1 km/h

Visibility: 51.04 km

Weather forecast

Sun
21 Jun
3°C / 14°C
Moderate Drizzle
Mon
22 Jun
3°C / 12°C
Overcast
Tue
23 Jun
2°C / 12°C
Overcast
Wed
24 Jun
1°C / 14°C
Mainly Clear
Thu
25 Jun
2°C / 16°C
Partly Cloudy
Hourly forecast today:
07:00 AM
3° / 7°
3° / 7°
Overcast
75% 2 km/h
08:00 AM
3° / 6°
3° / 6°
Partly Cloudy
82% 3 km/h
09:00 AM
3° / 6°
3° / 6°
Partly Cloudy
84% 2 km/h
10:00 AM
3° / 5°
3° / 5°
Partly Cloudy
84% 2 km/h
11:00 AM
2° / 5°
2° / 5°
Overcast
83% 1 km/h
12:00 PM
1° / 5°
1° / 5°
Overcast
77% 4 km/h
13:00 PM
0° / 7°
0° / 7°
Partly Cloudy
60% 8 km/h
14:00 PM
1° / 8°
1° / 8°
Partly Cloudy
60% 10 km/h
15:00 PM
0° / 9°
0° / 9°
Partly Cloudy
52% 10 km/h
16:00 PM
-2° / 11°
-2° / 11°
Partly Cloudy
39% 15 km/h
17:00 PM
-2° / 13°
-2° / 13°
Partly Cloudy
33% 21 km/h

30 Day Averages and Extremes

  • Average high 14.87°C
  • Average low 4.33°C
  • Hottest day 20°C (11 June 2026)
  • Coldest day 0°C (28 June 2026)
  • Average humidity 57.3%
  • Days with precipitation 7 days
  • Highest precipitation 6 mm (28 June 2026)

Yesterday's Data

  • Max: 17°C
  • Min: 5°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 mild weather in San Juan, with temperatures between 12ºC to 15ºC (53.6ºF to 59.0ºF), consider wearing:
- Light jacket (for cooler periods)
- Long-sleeve shirt or blouse
- Comfortable jeans or slacks
- Scarf (optional)

Temperature

Early
3°C / 8°C
Morning
3°C / 6°C
Afternoon
0°C / 9°C
Evening
2°C / 14°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 453
  • CO 194
  • NH3 0
  • NO2 7
  • O3 35
  • PM10 18
  • PM25 6
  • SO2 2
  • CH4 1,341

Sunrise / Sunset

11:33
21:38