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:
16°C
60.8°F
°C °F

Condition: Overcast

Pressure: 944 hPa

Feel like: 15 °C

Temperature: 16°C

Cloud: 95%

Humidity: 69%

Wind: SE - 7 km/h

Visibility: 24.14 km

Weather forecast

Tue
11 Nov
19°C / 32°C
Overcast
Wed
12 Nov
18°C / 28°C
Partly Cloudy
Thu
13 Nov
18°C / 31°C
Mainly Clear
Fri
14 Nov
21°C / 34°C
Clear Sky
Sat
15 Nov
20°C / 29°C
Mainly Clear
Hourly forecast today:
10:00 AM
10° / 16°
10° / 16°
Overcast
69% 14 km/h
11:00 AM
11° / 16°
11° / 16°
Overcast
69% 12 km/h
12:00 PM
11° / 17°
11° / 17°
Overcast
68% 11 km/h
13:00 PM
11° / 18°
11° / 18°
Partly Cloudy
64% 14 km/h
14:00 PM
11° / 20°
11° / 20°
Partly Cloudy
58% 19 km/h
15:00 PM
11° / 21°
11° / 21°
Partly Cloudy
52% 23 km/h
16:00 PM
11° / 23°
11° / 23°
Partly Cloudy
46% 27 km/h
17:00 PM
10° / 24°
10° / 24°
Partly Cloudy
41% 31 km/h
18:00 PM
9° / 26°
9° / 26°
Partly Cloudy
36% 34 km/h
19:00 PM
9° / 26°
9° / 26°
Partly Cloudy
33% 36 km/h
20:00 PM
8° / 27°
8° / 27°
Partly Cloudy
31% 37 km/h

30 Day Averages and Extremes

  • Average high 27.87°C
  • Average low 16.5°C
  • Hottest day 35°C (17 November 2025)
  • Coldest day 6°C (27 October 2025)
  • Average humidity 36.2%
  • Days with precipitation 21 days
  • Highest precipitation 27 mm (06 November 2025)

Yesterday's Data

  • Max: 25°C
  • Min: 16°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 27ºC (80.6ºF), consider wearing:
- Thin, moisture-wicking socks
- Open-toed sandals or light sneakers
- Loose and airy fabrics like linen or cotton
- Sunscreen for skin protection

Temperature

Early
10°C / 19°C
Morning
10°C / 16°C
Afternoon
11°C / 21°C
Evening
8°C / 27°C

Air quality

Moderate

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

  • CO2 441
  • CO 113
  • NH3 0
  • NO2 1
  • O3 61
  • PM10 5
  • PM25 4
  • SO2 0
  • CH4 1,332

Sunrise / Sunset

09:29
23:06