San Luis weather by month & the best time to visit
Argentina · city break · humid subtropical climate
The best time to visit San Luis is September — its sunniest month (Sunshine Score 94/100), with April and October close behind. San Luis averages about 3,223 hours of sunshine a year. Daytime highs around 21°C / 70°F and roughly 23 mm of rain in September.
When is the best time to visit San Luis?
For sunshine, the best time to visit San Luis is September, then April and October. The dullest month is July (56/100, 9 mm of rain). The full month-by-month picture is in the table below.
How sunny is San Luis?
San Luis is one of the sunniest places on Earth: about 3,223 hours of sunshine a year. September (94/100) is noticeably better than July (56). It ranks #5 of 41 destinations in Argentina for annual sunshine, above the national median of 2,741 hours. Rain has a clear season: the wettest stretch, around January, carries about 50% of the annual 693 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 75 | 32° / 90°F | 17° / 63°F | 126 mm | 12 |
| February | 78 | 30° / 86°F | 16° / 61°F | 113 mm | 11 |
| March | 83 | 28° / 82°F | 14° / 57°F | 84 mm | 8 |
| April | 89 | 23° / 73°F | 10° / 50°F | 50 mm | 5 |
| May | 78 | 18° / 64°F | 6° / 43°F | 23 mm | 3 |
| June | 65 | 16° / 61°F | 3° / 37°F | 5 mm | 2 |
| July | 56 | 15° / 59°F | 2° / 36°F | 9 mm | 3 |
| August | 80 | 18° / 64°F | 4° / 39°F | 9 mm | 4 |
| September | 94 | 21° / 70°F | 7° / 45°F | 23 mm | 6 |
| October | 89 | 26° / 79°F | 10° / 50°F | 52 mm | 8 |
| November | 81 | 29° / 84°F | 14° / 57°F | 92 mm | 10 |
| December | 79 | 31° / 88°F | 16° / 61°F | 107 mm | 12 |
Nearest destinations
San Luis: questions and answers
What kind of destination is San Luis?
San Luis is a city break in Argentina at 702 m elevation with a humid subtropical climate.
How many hours of sunshine does San Luis get a year?
San Luis gets about 3,223 hours of sunshine a year, at its best around September.
When is the best time to visit San Luis?
The sunniest time to visit San Luis is September, when the Sunshine Score peaks at 94/100 (with April and October close behind). Expect daytime highs around 21°C / 70°F.
What is the least sunny month in San Luis?
July is the least sunny month in San Luis, scoring 56/100 with about 9 mm of rain.
How strong is the sun in San Luis?
The typical midday UV index in San Luis peaks around 12 (extreme) in January, easing to about 2 (low) in June. Month-by-month midday UV values are in the UV column of the table on this page.
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