San Luis, Argentina Climate by Month
San Luis, Argentina
Hot summers and cool winters, with rain spread through the year.
The climate in San Luis is one of hot summers and cool winters, with rain spread through the year. Afternoon highs range from 61°F (16°C) in July to 89°F (32°C) in January, and July nights average 37°F (3°C). It gets 16 in (419 mm) of rain a year, spread across the months. June and July are almost completely dry.
- Warmest month
- 89°F(32°C)
- Average high, January
- Coldest nights
- 37°F(3°C)
- Average low, July
- Rain per year
- 16 in(419 mm)
- No clear rainy season
- Humidity
- 51%
- Sunniest: December
Best and worst months in San Luis
Best for weatherThe most comfortable weather comes in April, September and October, with highs around 75°F (24°C) and about 1.3 in (33 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the hottest, with highs of 89°F (32°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in April.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
San Luis weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 89°F(32°C) | 64°F(18°C) | 2.6 in(66 mm) | 48% | 6.9 |
| FebFebruary | 85°F(30°C) | 62°F(17°C) | 2.3 in(58 mm) | 56% | 6.2 |
| MarMarch | 82°F(28°C) | 59°F(15°C) | 1.8 in(46 mm) | 56% | 5.2 |
| AprAprilBest | 74°F(23°C) | 52°F(11°C) | 1.4 in(35 mm) | 62% | 3.9 |
| MayMay | 67°F(19°C) | 44°F(7°C) | 0.6 in(15 mm) | 60% | 2.8 |
| JunJune | 63°F(17°C) | 39°F(4°C) | 0.2 in(6 mm) | 56% | 2.5 |
| JulJuly | 61°F(16°C) | 37°F(3°C) | 0.4 in(9 mm) | 51% | 2.9 |
| AugAugust | 67°F(19°C) | 41°F(5°C) | 0.5 in(12 mm) | 42% | 3.7 |
| SepSeptemberBest | 72°F(22°C) | 46°F(8°C) | 0.6 in(16 mm) | 41% | 4.8 |
| OctOctoberBest | 78°F(26°C) | 53°F(12°C) | 1.9 in(47 mm) | 47% | 5.7 |
| NovNovember | 84°F(29°C) | 58°F(15°C) | 1.9 in(47 mm) | 46% | 6.6 |
| DecDecember | 88°F(31°C) | 62°F(17°C) | 2.4 in(62 mm) | 44% | 7.0 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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