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:
17°C
62.6°F
°C °F

Condition: Overcast

Pressure: 945 hPa

Feel like: 14 °C

Temperature: 17°C

Cloud: 84%

Humidity: 44%

Wind: SSE - 21 km/h

Visibility: 52.64 km

Weather forecast

Sun
25 Oct
9°C / 22°C
Overcast
Mon
26 Oct
12°C / 24°C
Overcast
Tue
27 Oct
13°C / 22°C
Drizzle
Wed
28 Oct
13°C / 26°C
Partly Cloudy
Thu
29 Oct
15°C / 27°C
Drizzle
Hourly forecast today:
17:00 PM
5° / 17°
5° / 17°
Overcast
44% 46 km/h
18:00 PM
4° / 17°
4° / 17°
Mainly Clear
43% 47 km/h
19:00 PM
4° / 17°
4° / 17°
Partly Cloudy
42% 46 km/h
20:00 PM
5° / 17°
5° / 17°
Drizzle
46% 44 km/h
21:00 PM
5° / 16°
5° / 16°
Drizzle
47% 44 km/h
22:00 PM
5° / 15°
5° / 15°
Drizzle
52% 44 km/h
23:00 PM
5° / 14°
5° / 14°
Drizzle
55% 38 km/h
00:00 AM
5° / 13°
5° / 13°
Mainly Clear
55% 36 km/h
01:00 AM
4° / 13°
4° / 13°
Partly Cloudy
57% 34 km/h
02:00 AM
4° / 13°
4° / 13°
Mainly Clear
56% 28 km/h
03:00 AM
4° / 12°
4° / 12°
Partly Cloudy
57% 25 km/h

30 Day Averages and Extremes

  • Average high 24.07°C
  • Average low 12.9°C
  • Hottest day 35°C (01 November 2026)
  • Coldest day 9°C (14 October 2026)
  • Average humidity 48.27%
  • Days with precipitation 16 days
  • Highest precipitation 24 mm (24 October 2026)

Yesterday's Data

  • Max: 21°C
  • Min: 13°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 14ºC to 17ºC (57.2ºF to 62.6ºF), consider wearing:
- Casual sneakers or loafers
- Comfortable jeans or slacks
- Light jacket (for cooler periods)
- Scarf (optional)

Temperature

Early
7°C / 16°C
Morning
8°C / 13°C
Afternoon
6°C / 16°C
Evening
5°C / 16°C

Air quality

Moderate

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

  • CO2 438
  • CO 87
  • NH3 0
  • NO2 0
  • O3 62
  • PM10 0
  • PM25 0
  • SO2 0
  • CH4 1,302

Sunrise / Sunset

09:44
22:52