San Luis weather
Today's sky, the hour-by-hour rain chance and the 16-day forecast for San Luis, Argentina. Like most weather services, we show San Luis at one spot: San Luis, its largest city. At 8:30 PM local time it was partly cloudy and 19°C (66°F). Mostly light, on-and-off rain; heavier around 12 PM (4.1 mm total). Best months for weather: Apr, Aug–Oct.
Current conditions
- Clouds
- 75%
- Chance of rain
- 41%
- Rain
- 0.0 mm/h
Hourly Forecast
Mostly light, on-and-off rain; heavier around 12 PM (4.1 mm total)
Daily Forecast
Best Time to Visit
Peak season Apr, Aug–OctOff season Jul, Jan–Feb
About San Luis weather
Is it raining in San Luis right now?
No. It’s partly cloudy and 19° right now. Mostly light, on-and-off rain; heavier around 12 PM (4.1 mm total).
What’s the weather like in San Luis this week?
Over the next 7 days, expect highs of 21–25° and lows of 12–14°. Rain is likely on 4 of 7 days (Saturday, Sunday, Monday, Tuesday). The driest day looks like Thursday.
Has it been raining in San Luis lately?
In the past 7 days, San Luis had 2 rainy days and 17.4 mm of rain in total.
What should I pack for San Luis?
For the coming week, bring an umbrella or rain jacket and a warm layer for the evenings.
San Luis weather by month
When is the best time to visit San Luis?
Based on weather alone, the best time to visit San Luis is Apr, Aug–Oct, according to NASA's 2001–2025 climate averages. Jul, Jan–Feb tends to be the least pleasant. Average highs run from 15°C (58°F) in July to 32°C (89°F) in January.
What is the rainiest month in San Luis?
January is the wettest month, with about 126 mm (5.0 in) of rain on average. June is the driest, with about 5 mm (0.2 in).
What is the hottest month in San Luis?
January is the warmest, with average highs of 32°C (89°F) and lows of 17°C (63°F). July is the coolest, with highs of 15°C (58°F) and lows of 2°C (35°F).
Does San Luis have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is January at about 126 mm (5.0 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis for San Luis), forecast and current conditions from Open-Meteo. Page updated . How we rate months
Compare places in San Luis
Weather can differ a lot within San Luis: coasts, hills and mountains each have their own climate.
| Place | Best months | Rainy months | Highs | Rain a year |
|---|---|---|---|---|
| San Luis | Apr, Aug–Oct | None | 15–32°C | 693 mm |
| Villa Mercedes | Apr, Aug–Oct | None | 15–32°C | 734 mm |