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:
2°C
35.6°F
°C °F

Condition: Mainly Clear

Pressure: 946 hPa

Feel like: 0 °C

Temperature: 2°C

Cloud: 33%

Humidity: 90%

Wind: WSW - 1 km/h

Visibility: 38.42 km

Weather forecast

Mon
13 Jul
6°C / 19°C
Partly Cloudy
Tue
14 Jul
4°C / 18°C
Overcast
Wed
15 Jul
7°C / 21°C
Partly Cloudy
Thu
16 Jul
13°C / 22°C
Overcast
Fri
17 Jul
9°C / 16°C
Overcast
Hourly forecast today:
12:00 PM
1° / 2°
1° / 2°
Mainly Clear
90% 2 km/h
13:00 PM
2° / 5°
2° / 5°
Mainly Clear
77% 8 km/h
14:00 PM
3° / 8°
3° / 8°
Partly Cloudy
69% 11 km/h
15:00 PM
3° / 9°
3° / 9°
Partly Cloudy
65% 15 km/h
16:00 PM
3° / 11°
3° / 11°
Partly Cloudy
58% 18 km/h
17:00 PM
3° / 13°
3° / 13°
Partly Cloudy
51% 17 km/h
18:00 PM
2° / 14°
2° / 14°
Overcast
45% 14 km/h
19:00 PM
2° / 15°
2° / 15°
Overcast
43% 13 km/h
20:00 PM
2° / 15°
2° / 15°
Overcast
43% 12 km/h
21:00 PM
3° / 14°
3° / 14°
Partly Cloudy
44% 10 km/h
22:00 PM
3° / 13°
3° / 13°
Partly Cloudy
51% 7 km/h

30 Day Averages and Extremes

  • Average high 13.67°C
  • Average low 3.63°C
  • Hottest day 22°C (16 July 2026)
  • Coldest day -1°C (04 July 2026)
  • Average humidity 60.27%
  • Days with precipitation 10 days
  • Highest precipitation 31 mm (19 July 2026)

Yesterday's Data

  • Max: 13°C
  • Min: 4°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:
- Comfortable jeans or slacks
- Sun hat (if spending time outdoors)
- Lightweight sweater or cardigan
- Casual sneakers or loafers

Temperature

Early
3°C / 6°C
Morning
1°C / 4°C
Afternoon
3°C / 9°C
Evening
3°C / 14°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 456
  • CO 200
  • NH3 0
  • NO2 10
  • O3 15
  • PM10 9
  • PM25 6
  • SO2 2
  • CH4 1,363

Sunrise / Sunset

11:32
21:47