Climate and average weather in San Luis
In San Luis, the summers are hot, showery, and mostly clear and the winters are mild and mostly clear.
Over the course of the year, the temperature in San Luis typically varies from 4°C to 29°C, and is rarely below -2°C or above 35°C. January is the hottest month of the year, while July is the coldest.
Based on the travel score, the best times of year to visit San Luis for warm-weather activities are from mid February to mid June and late July to early December.
- Hottest
- Jan
- 29°
- Coldest
- Jul
- 4°
- Wettest
- Jan
- 107 mm
- Driest
- Jun
- 8 mm
- Rain / yr
- 665 mm
- 90 wet days
- Daylight
- 9.8–14.2 h
- shortest–longest
- Elevation
- 729 m
- 33.3°S
- Clearest
- Aug
- 33% cloud
San Luis is capital city of the San Luis Province in the Cuyo region of Argentina.
- Founded
- 1594
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
San Luis weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late July to early December.
Temperature through the year
Daily average highs and lows in San Luis, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.0 months, from November 12 to March 14, with daily high temperatures above 26°C. The hottest month of the year in San Luis is January, with an average high of 29°C and low of 18°C.
The cool season lasts 3.0 months, from May 17 to August 14, with daily high temperatures below 18°C. The coldest month of the year in San Luis is July, with an average low of 4°C and high of 16°C.
Days typically run about 11°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 28 | 26 | 22 | 18 | 16 | 16 | 18 | 21 | 24 | 26 | 28 |
| Avg low (°C) | 18 | 17 | 15 | 11 | 8 | 5 | 4 | 6 | 9 | 12 | 14 | 17 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 29 | 18 |
| Feb | 28 | 17 |
| Mar | 26 | 15 |
| Apr | 22 | 11 |
| May | 18 | 8 |
| Jun | 16 | 5 |
| Jul | 16 | 4 |
| Aug | 18 | 6 |
| Sep | 21 | 9 |
| Oct | 24 | 12 |
| Nov | 26 | 14 |
| Dec | 28 | 17 |
Average hourly temperature in San Luis
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on January afternoons, near 29°C, and coldest before dawn in July, near 4°C.
San Luis weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 29° / 18° | 107 | 13.3 | 14 | 5.3 |
| Feb | 28° / 17° | 81 | 10.9 | 13.2 | 6.3 |
| Mar | 26° / 15° | 80 | 10.1 | 12.3 | 7.1 |
| Apr | 22° / 11° | 53 | 7 | 11.2 | 7.4 |
| May | 18° / 8° | 25 | 4.2 | 10.3 | 6.8 |
| Jun | 16° / 5° | 8 | 1.9 | 9.8 | 6.3 |
| Jul | 16° / 4° | 9 | 2.1 | 10 | 6.1 |
| Aug | 18° / 6° | 15 | 2.6 | 10.8 | 7.4 |
| Sep | 21° / 9° | 30 | 4.6 | 11.8 | 7.6 |
| Oct | 24° / 12° | 66 | 8.7 | 12.8 | 7.5 |
| Nov | 26° / 14° | 89 | 11.7 | 13.7 | 6.7 |
| Dec | 28° / 17° | 102 | 13.1 | 14.2 | 5.8 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
San Luis gets about 665 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.
The wetter season lasts 6.1 months, from around Oct 8 to Apr 10, peaking in January at about 45% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 26.
January is the wettest month by volume, with 107 mm over about 13 wet days; June is the driest, with 8 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 43 | 39 | 33 | 22 | 14 | 7 | 7 | 8 | 16 | 28 | 39 | 42 |
| Rain days | 13 | 11 | 10 | 7 | 4 | 2 | 2 | 3 | 5 | 9 | 12 | 13 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 43 | 13 |
| Feb | 39 | 11 |
| Mar | 33 | 10 |
| Apr | 22 | 7 |
| May | 14 | 4 |
| Jun | 7 | 2 |
| Jul | 7 | 2 |
| Aug | 8 | 3 |
| Sep | 16 | 5 |
| Oct | 28 | 9 |
| Nov | 39 | 12 |
| Dec | 42 | 13 |
Monthly rainfall
Over a full year, San Luis collects about 665 mm of rain across 90 wet days — roughly 55 mm in an average month.
It doesn’t fall evenly. January is the wettest month with 107 mm, while June is the driest at just 8 mm. The three wettest months alone bring about 45% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 107 | 81 | 80 | 53 | 25 | 8 | 9 | 15 | 30 | 66 | 89 | 102 |
| Rain days | 13 | 11 | 10 | 7 | 4 | 2 | 2 | 3 | 5 | 9 | 12 | 13 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 107 | 13 |
| Feb | 81 | 11 |
| Mar | 80 | 10 |
| Apr | 53 | 7 |
| May | 25 | 4 |
| Jun | 8 | 2 |
| Jul | 9 | 2 |
| Aug | 15 | 3 |
| Sep | 30 | 5 |
| Oct | 66 | 9 |
| Nov | 89 | 12 |
| Dec | 102 | 13 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In San Luis, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.
The clearer part of the year begins around November 10 and lasts for 4.0 months, ending around March 11. The clearest month is December, when the sky is clear, mostly clear, or partly cloudy 79% of the time on average.
The cloudier part of the year begins around March 12 and lasts for 3.6 months, ending around June 28. The cloudiest month is May, when it is overcast or mostly cloudy 41% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 76 | 76 | 71 | 66 | 59 | 68 | 75 | 76 | 72 | 69 | 74 | 79 |
| Cloudier (%) | 24 | 24 | 29 | 34 | 41 | 32 | 25 | 24 | 28 | 31 | 26 | 21 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 76 | 24 |
| Feb | 76 | 24 |
| Mar | 71 | 29 |
| Apr | 66 | 34 |
| May | 59 | 41 |
| Jun | 68 | 32 |
| Jul | 75 | 25 |
| Aug | 76 | 24 |
| Sep | 72 | 28 |
| Oct | 69 | 31 |
| Nov | 74 | 26 |
| Dec | 79 | 21 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around January 1, brings about 14 h 12 min of light; the shortest, around June 11, only 9 h 48 min — a swing of roughly 4 h 24 min.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.0 | 13.2 | 12.3 | 11.2 | 10.3 | 9.8 | 10.0 | 10.8 | 11.8 | 12.8 | 13.7 | 14.2 |
| Sunrise (AM) | 6:35 | 7:03 | 7:27 | 7:50 | 8:13 | 8:31 | 8:31 | 8:07 | 7:26 | 6:45 | 6:18 | 6:16 |
| Sunset (PM) | 8:34 | 8:17 | 7:43 | 7:01 | 6:30 | 6:20 | 6:31 | 6:52 | 7:14 | 7:36 | 8:03 | 8:27 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 14.0 | 6:35 | 8:34 |
| Feb | 13.2 | 7:03 | 8:17 |
| Mar | 12.3 | 7:27 | 7:43 |
| Apr | 11.2 | 7:50 | 7:01 |
| May | 10.3 | 8:13 | 6:30 |
| Jun | 9.8 | 8:31 | 6:20 |
| Jul | 10.0 | 8:31 | 6:31 |
| Aug | 10.8 | 8:07 | 6:52 |
| Sep | 11.8 | 7:26 | 7:14 |
| Oct | 12.8 | 6:45 | 7:36 |
| Nov | 13.7 | 6:18 | 8:03 |
| Dec | 14.2 | 6:16 | 8:27 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
San Luis averages about 16 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 13 and 20 days.
The sunnier stretch runs 3.4 months, from around Jun 19 to Sep 28. The sunniest month is August, with roughly 19 sunny days (bright).
The greyest month is May, down near 13 sunny days — about 32% fewer than the August peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 16 | 15 | 16 | 16 | 13 | 16 | 18 | 20 | 18 | 16 | 16 | 17 |
| Sky | Bright | Bright | Bright | Bright | Mixed | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Sunny days | Sky | |
|---|---|---|
| Jan | 16 | Bright |
| Feb | 15 | Bright |
| Mar | 16 | Bright |
| Apr | 16 | Bright |
| May | 13 | Mixed |
| Jun | 16 | Bright |
| Jul | 18 | Bright |
| Aug | 20 | Bright |
| Sep | 18 | Bright |
| Oct | 16 | Bright |
| Nov | 16 | Bright |
| Dec | 17 | Bright |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In San Luis, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 3.9 months, from around December 6 to April 3. The muggiest month is January, when the air feels humid, muggy or worse about 33% of the time.
The most comfortable stretch runs from around April 4 to December 5, and May is the most comfortable month — the air is dry or comfortable 100% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 34 | 36 | 49 | 80 | 95 | 100 | 100 | 100 | 99 | 93 | 77 | 54 |
| Comfortable (%) | 33 | 32 | 28 | 15 | 5 | 0 | 0 | 0 | 1 | 7 | 19 | 28 |
| Humid (%) | 26 | 25 | 19 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 4 | 15 |
| Muggy (%) | 7 | 7 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| Jan | 34 | 33 | 26 | 7 |
| Feb | 36 | 32 | 25 | 7 |
| Mar | 49 | 28 | 19 | 4 |
| Apr | 80 | 15 | 4 | 1 |
| May | 95 | 5 | 0 | 0 |
| Jun | 100 | 0 | 0 | 0 |
| Jul | 100 | 0 | 0 | 0 |
| Aug | 100 | 0 | 0 | 0 |
| Sep | 99 | 1 | 0 | 0 |
| Oct | 93 | 7 | 1 | 0 |
| Nov | 77 | 19 | 4 | 0 |
| Dec | 54 | 28 | 15 | 3 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in San Luis is typically calm, near 11 km/h, and varies little with the seasons.
The windier part of the year lasts 5.7 months, from around Aug 9 to Jan 29. The windiest month is October, averaging about 13 km/h (light breeze).
The calmer part of the year runs from around Jan 30 to Aug 8, with May the calmest month at about 9 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 11 | 11 | 10 | 10 | 9 | 9 | 10 | 11 | 12 | 13 | 12 | 12 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | light breeze | light breeze | light breeze | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 11 | calm |
| Feb | 11 | calm |
| Mar | 10 | calm |
| Apr | 10 | calm |
| May | 9 | calm |
| Jun | 9 | calm |
| Jul | 10 | calm |
| Aug | 11 | calm |
| Sep | 12 | light breeze |
| Oct | 13 | light breeze |
| Nov | 12 | light breeze |
| Dec | 12 | calm |
Hazard calendar for San Luis
When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.
San Luis's rainy season runs October–April, when most of the year's rain falls.
Best time to visit San Luis
To characterize how pleasant the weather is in San Luis throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late November, San Luis is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best times of year to visit San Luis for general outdoor tourist activities run from mid February to mid June and again from late July to early December, with a peak score in the third week of September.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 5.3 | 6.3 | 7.1 | 7.4 | 6.9 | 6.2 | 6.2 | 7.4 | 7.6 | 7.4 | 6.7 | 5.8 |
| Rating | fair | good | good | good | good | good | good | good | ideal | good | good | good |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 5.3 | fair |
| Feb | 6.3 | good |
| Mar | 7.1 | good |
| Apr | 7.4 | good |
| May | 6.9 | good |
| Jun | 6.2 | good |
| Jul | 6.2 | good |
| Aug | 7.4 | good |
| Sep | 7.6 | ideal |
| Oct | 7.4 | good |
| Nov | 6.7 | good |
| Dec | 5.8 | good |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit San Luis for hot-weather activities is from early October to early April, with a peak score in the third week of December.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for San Luis, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around January (highs near 29°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 16°C), pack a warm layer.
In January, San Luis sees daytime highs around 29°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 13 days see rain.
UV index (midday) in San Luis by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in San Luis peaks around January 17 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 13 | 10 | 6 | 4 | 3 | 3 | 4 | 6 | 10 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | High | Moderate | Moderate | Moderate | Moderate | High | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 10 | Extreme |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 6 | High |
| Oct | 10 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Average hourly UV index in San Luis
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in January the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 9 | 8.5 | 7.5 | 5.5 | 3.5 | 1 | 2 | 4.5 | 6 | 8 | 8.5 | 9 |
| UV ≥ 6 (h/day) | 7 | 6.5 | 5 | 0 | 0 | 0 | 0 | 0 | 2 | 5.5 | 6.5 | 7 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 6.5 |
| Mar | 7.5 | 5 |
| Apr | 5.5 | 0 |
| May | 3.5 | 0 |
| Jun | 1 | 0 |
| Jul | 2 | 0 |
| Aug | 4.5 | 0 |
| Sep | 6 | 2 |
| Oct | 8 | 5.5 |
| Nov | 8.5 | 6.5 |
| Dec | 9 | 7 |
Growing season
San Luis is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about August 7 to June 26 (324 days); outside that window a hard frost is an occasional risk.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 98 | 93 | 85 | 92 | 97 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 6 | 31 | 11 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 98 | 0 |
| Jun | 93 | 6 |
| Jul | 85 | 31 |
| Aug | 92 | 11 |
| Sep | 97 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. San Luis banks about 2,533 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 417 | 346 | 321 | 199 | 96 | 14 | 1 | 64 | 141 | 237 | 307 | 389 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 417 |
| Feb | 346 |
| Mar | 321 |
| Apr | 199 |
| May | 96 |
| Jun | 14 |
| Jul | 1 |
| Aug | 64 |
| Sep | 141 |
| Oct | 237 |
| Nov | 307 |
| Dec | 389 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
San Luis receives about 5.2 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.7 and 7.6 kWh/m².
The brighter stretch of the year lasts 6.0 months, from around Sep 14 to Mar 16. The brightest month is December, averaging about 7.5 kWh/m² (intense).
The dimmest month is June, down near 2.8 kWh/m² — roughly 63% less than the December peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 7.3 | 6.5 | 5.2 | 3.9 | 3.0 | 2.8 | 3.1 | 4.1 | 5.2 | 6.1 | 7.2 | 7.6 |
| Level | Intense | Intense | Bright | Moderate | Moderate | Moderate | Moderate | Bright | Bright | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 7.3 | Intense |
| Feb | 6.5 | Intense |
| Mar | 5.2 | Bright |
| Apr | 3.9 | Moderate |
| May | 3.0 | Moderate |
| Jun | 2.8 | Moderate |
| Jul | 3.1 | Moderate |
| Aug | 4.1 | Bright |
| Sep | 5.2 | Bright |
| Oct | 6.1 | Intense |
| Nov | 7.2 | Intense |
| Dec | 7.6 | Intense |
Where is San Luis?
San Luis sits at 33.3°S, 66.3°W, 729 m above sea level, in Argentina. The nearest listed city is Villa Mercedes, 91 km away.
Topography around San Luis
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Luis.
Within 3 km, the terrain around San Luis has only modest variations in elevation — a maximum elevation change of 121 m around an average of 743 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,416 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,820 m.
The land around San Luis is covered by artificial surfaces (72%) within 3 km, shrubs (50%) and grassland (24%) within 16 km, and shrubs (59%) and grassland (22%) within 80 km.
Argentina travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / I
- 220 V · 50 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $14,898
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Homicide rate
- 4.5
- per 100k, 2023
- Road deaths
- 14.1
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- High
- EF EPI 575
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for San Luis (-33.2914°, -66.3247°, elevation 729 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).