San Juan weather for today, tomorrow and the next 14 days, compared across three independent forecast sources so you can see where they agree before you plan your day. Right now it is 16°C and sunny in San Juan. Tomorrow's forecast: highs of 25°C, lows of 17°C with a 38% chance of rain.
Sources: Open-Meteo, OpenWeather, WeatherAPI · Updated every 12 hours
San JuanArgentina
Updated 02:14 AM
Sunny
Feels like 15°
Forecast Comparison
See how independent weather sources forecast the same location right now.
Forecast agreement
Sources show notable variationTemperature range
16° – 17°
Rain probability
3% – 80%
Wind speed
3 km/h – 14 km/h
Temperature by provider
Hourly forecast
16-day forecast
Rain forecast
Precipitation probability: 80%Hourly precipitation timeline
Wind
Direction: SE
Current wind
11 km/h
Gusts
25 km/h
Hourly wind
Daily wind
Weather alerts
No active weather alerts.
Weather map
San Juan this time of year
- San Juan is usually about 3°C cooler than La Rioja, 290 km away, in October.
- Evenings cool off sharply: the daily range is around 17°C, so pack a layer.
- Seasonally, October counts as mid-spring in San Juan — the seasons are reversed south of the equator.
Planning a trip to San Juan? Save or share this forecast.
San Juan weather overview: climate, seasons and what to expect
San Juan, Argentina, sits at approximately 31.54°S, 68.54°W and is home to about 447,000 people. This page compares forecasts from three independent weather providers — Open-Meteo, OpenWeather and WeatherAPI — so you can see at a glance where they agree and where they differ. The data refreshes every 12 hours via ISR.
Climate-wise, San Juan has a desert climate: very little rain, strong sun and big swings between day and night. Expect the most heat in January (about 32°C by day) and the chilliest nights in July (around 3°C). Rain is scarce in San Juan all year round. The nearest places with their own forecast page are Mendoza (153 km), San Luis (284 km) and La Rioja (286 km).
Frequently asked questions
- What is the weather in San Juan today?
- Right now San Juan shows sunny conditions at around 16°C (feels like 15°C), based on OpenWeatherMap. The chance of rain today is about 80%. Compare this with the other sources above for a fuller picture.
- What is the weather in San Juan tomorrow?
- Tomorrow in San Juan: expect a high of 25°C and a low of 17°C, with a 38% chance of rain. See the hourly breakdown above for more detail.
- Will it rain in San Juan today?
- The precipitation probability for San Juan is around 80% according to OpenWeatherMap. Check the Rain forecast section for the hour-by-hour breakdown and compare with other sources.
- What is the 14-day forecast for San Juan?
- The 14-day forecast above shows daily highs, lows and rain probability for San Juan from multiple sources; compare them to see how confident the outlook is.
Nearby cities
Highs 16° – 33°C (warmest in Jan, coolest in Jul)
Highs 16° – 32°C (warmest in Jan, coolest in Jul)
Highs 18° – 34°C (warmest in Jan, coolest in Jul)
Highs 16° – 30°C (warmest in Jan, coolest in Jul)
Highs 19° – 25°C (warmest in Feb, coolest in Jul)
Highs 13° – 19°C (warmest in Feb, coolest in Jul)
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