San Luis weather in October

In October, San Luis sees average daytime highs of 24°C and overnight lows near 12°C, with 66 mm of precipitation across 8.7 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 25°C by the end. The sky is clear or mostly clear about 53% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 18 min at the start of October to 13 h 18 min by month's end. Set against the rest of the year, October is San Luis's 9th-clearest and 1st-windiest month. For the whole year in context, see San Luis's year-round climate.

Daytime high: 24°; 6th warmest
Overnight low: 12°; 7th coldest
Precipitation: 66 mm; 8.7 wet days
Daylight: 12 h 48 min; 6:45 AM – 7:36 PM
Cloud cover: 42%; 9th clearest
Wind: 13 km/h; 1st windiest
Solar energy: 6.11 kWh/m²
Travel score: 7.5; out of 10

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.

← September San Luis year-round climate November →Best places to visit in October

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 25°C by the end.

A typical October day in San Luis reaches about 24°C in the afternoon and slips back to 12°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 31°C. Set against its neighbours, October runs about 3°C warmer than September and about 3°C cooler than November.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	22	22	22	22	23	23	23	23	23	23	23	23	23	24	24	24	24	24	24	24	24	24	24	24	24	24	25	25	25	25	25
Avg low (°C)	10	10	10	10	11	11	11	11	11	11	11	11	12	12	12	12	12	12	12	12	12	12	13	13	13	13	13	13	13	13	13

	Avg high (°C)	Avg low (°C)
1	22	10
2	22	10
3	22	10
4	22	10
5	23	11
6	23	11
7	23	11
8	23	11
9	23	11
10	23	11
11	23	11
12	23	11
13	23	12
14	24	12
15	24	12
16	24	12
17	24	12
18	24	12
19	24	12
20	24	12
21	24	12
22	24	12
23	24	13
24	24	13
25	24	13
26	24	13
27	25	13
28	25	13
29	25	13
30	25	13
31	25	13

San Luis weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 6th-wettest month here — the current month is highlighted below.

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

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 31%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	67	67	67	67	67	67	67	68	68	68	68	68	70	70	70	70	70	70	70	70	71	71	70	70	70	70	70	71	71	70	71
Cloudier (%)	33	33	33	33	33	33	33	32	32	32	32	32	30	30	30	30	30	30	30	30	29	29	30	30	30	30	30	29	29	30	29

	Clearer (%)	Cloudier (%)
1	67	33
2	67	33
3	67	33
4	67	33
5	67	33
6	67	33
7	67	33
8	68	32
9	68	32
10	68	32
11	68	32
12	68	32
13	70	30
14	70	30
15	70	30
16	70	30
17	70	30
18	70	30
19	70	30
20	70	30
21	71	29
22	71	29
23	70	30
24	70	30
25	70	30
26	70	30
27	70	30
28	71	29
29	71	29
30	70	30
31	71	29

Chance of precipitation in October

Any precipitation

San Luis gets around 66 mm of rain and snow over 8.7 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 28% and peaks near 33% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	22	22	23	23	24	24	25	25	25	26	26	26	26	27	27	28	28	29	29	29	30	30	30	30	30	31	31	31	32	32	33

	Rain chance (%)
1	22
2	22
3	23
4	23
5	24
6	24
7	25
8	25
9	25
10	26
11	26
12	26
13	26
14	27
15	27
16	28
17	28
18	29
19	29
20	29
21	30
22	30
23	30
24	30
25	30
26	31
27	31
28	31
29	32
30	32
31	33

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	98	98	98	97	97	96	96	95	95	94	94	93	93	92	92	92	92	92	92	91	91	91	91	90	90	90	90	88	88	88	87
Comfortable (%)	2	2	2	3	3	4	4	5	5	6	6	6	6	7	7	7	7	7	7	8	8	8	8	9	9	9	9	10	10	10	11
Humid (%)	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	2	2	2

	Dry (%)	Comfortable (%)	Humid (%)
1	98	2	0
2	98	2	0
3	98	2	0
4	97	3	0
5	97	3	0
6	96	4	0
7	96	4	0
8	95	5	0
9	95	5	0
10	94	6	0
11	94	6	0
12	93	6	1
13	93	6	1
14	92	7	1
15	92	7	1
16	92	7	1
17	92	7	1
18	92	7	1
19	92	7	1
20	91	8	1
21	91	8	1
22	91	8	1
23	91	8	1
24	90	9	1
25	90	9	1
26	90	9	1
27	90	9	1
28	88	10	2
29	88	10	2
30	88	10	2
31	87	11	2

Wind in October

Winds average 13 km/h in October, the windiest month of the year.

Across October, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	13	light breeze
2	13	light breeze
3	13	light breeze
4	13	light breeze
5	13	light breeze
6	13	light breeze
7	13	light breeze
8	13	light breeze
9	13	light breeze
10	13	light breeze
11	13	light breeze
12	13	light breeze
13	13	light breeze
14	13	light breeze
15	13	light breeze
16	13	light breeze
17	13	light breeze
18	13	light breeze
19	13	light breeze
20	13	light breeze
21	13	light breeze
22	13	light breeze
23	13	light breeze
24	13	light breeze
25	13	light breeze
26	13	light breeze
27	13	light breeze
28	13	light breeze
29	13	light breeze
30	13	light breeze
31	13	light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 18 min at the start of October to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over October. Sunrise moves from 7:05 AM to 6:29 AM, and sunset from 7:24 PM to 7:48 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	12.3	12.4	12.4	12.4	12.5	12.5	12.5	12.6	12.6	12.6	12.7	12.7	12.7	12.8	12.8	12.8	12.9	12.9	12.9	13.0	13.0	13.0	13.1	13.1	13.1	13.2	13.2	13.2	13.3	13.3	13.3
Sunrise (AM)	7:05	7:03	7:02	7:00	6:59	6:58	6:56	6:55	6:54	6:53	6:51	6:50	6:49	6:48	6:46	6:45	6:44	6:43	6:42	6:40	6:39	6:38	6:37	6:36	6:35	6:34	6:33	6:32	6:31	6:30	6:29
Sunset (PM)	7:24	7:25	7:26	7:26	7:27	7:28	7:29	7:29	7:30	7:31	7:32	7:32	7:33	7:34	7:35	7:36	7:36	7:37	7:38	7:39	7:40	7:41	7:41	7:42	7:43	7:44	7:45	7:46	7:47	7:48	7:48

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.3	7:05	7:24
2	12.4	7:03	7:25
3	12.4	7:02	7:26
4	12.4	7:00	7:26
5	12.5	6:59	7:27
6	12.5	6:58	7:28
7	12.5	6:56	7:29
8	12.6	6:55	7:29
9	12.6	6:54	7:30
10	12.6	6:53	7:31
11	12.7	6:51	7:32
12	12.7	6:50	7:32
13	12.7	6:49	7:33
14	12.8	6:48	7:34
15	12.8	6:46	7:35
16	12.8	6:45	7:36
17	12.9	6:44	7:36
18	12.9	6:43	7:37
19	12.9	6:42	7:38
20	13.0	6:40	7:39
21	13.0	6:39	7:40
22	13.0	6:38	7:41
23	13.1	6:37	7:41
24	13.1	6:36	7:42
25	13.1	6:35	7:43
26	13.2	6:34	7:44
27	13.2	6:33	7:45
28	13.2	6:32	7:46
29	13.3	6:31	7:47
30	13.3	6:30	7:48
31	13.3	6:29	7:48

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 6.11 kWh/m².

For context, solar energy here swings from a low near 2.78 kWh/m² to a high of 7.59 kWh/m² in December across the year — October's 6.11 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.7	5.7	5.7	5.7	5.8	5.8	5.8	5.9	5.9	5.9	6.0	6.0	6.0	6.1	6.1	6.1	6.2	6.2	6.2	6.3	6.3	6.3	6.4	6.4	6.4	6.5	6.5	6.5	6.6	6.6	6.7
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense	Intense

	Solar energy (kWh/m²)	Level
1	5.7	Bright
2	5.7	Bright
3	5.7	Bright
4	5.7	Bright
5	5.8	Bright
6	5.8	Bright
7	5.8	Bright
8	5.9	Bright
9	5.9	Bright
10	5.9	Bright
11	6.0	Bright
12	6.0	Intense
13	6.0	Intense
14	6.1	Intense
15	6.1	Intense
16	6.1	Intense
17	6.2	Intense
18	6.2	Intense
19	6.2	Intense
20	6.3	Intense
21	6.3	Intense
22	6.3	Intense
23	6.4	Intense
24	6.4	Intense
25	6.4	Intense
26	6.5	Intense
27	6.5	Intense
28	6.5	Intense
29	6.6	Intense
30	6.6	Intense
31	6.7	Intense

Planning a trip in October

Hazard calendar for San Luis

In seasonPeak

In October, San Luis sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

San Luis's rainy season runs October–April, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is October a good time to visit San Luis?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.5

Sightseeing

2nd-best month of the year

6.0

Beach & pool

6th-best month of the year

October is one of the better times to visit San Luis for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Luis in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, San Luis sees daytime highs around 24°C and nights near 12°C. Pack sun protection. Worth having: light clothes and rain gear. About 9 days see rain.

sun protectionlight clothesrain gear

UV index in San Luis in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

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

Location & terrain

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.

3 km

121 m

artificial surfaces 72%

16 km

1,416 m

shrubs 50%

80 km

1,820 m

shrubs 59%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

← September San Luis year-round climate November →Best places to visit in October

October weather nearby: Villa Mercedes 91 km · Villa Dolores 184 km · Río Cuarto 184 km · Rivadavia 199 km · San Martín 201 km · Embalse 217 km · Rodeo del Medio 222 km · General Alvear 226 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).

	Avg high (°C)	Avg low (°C)
1	22	10
2	22	10
3	22	10
4	22	10
5	23	11
6	23	11
7	23	11
8	23	11
9	23	11
10	23	11
11	23	11
12	23	11
13	23	12
14	24	12
15	24	12
16	24	12
17	24	12
18	24	12
19	24	12
20	24	12
21	24	12
22	24	12
23	24	13
24	24	13
25	24	13
26	24	13
27	25	13
28	25	13
29	25	13
30	25	13
31	25	13

	Clearer (%)	Cloudier (%)
1	67	33
2	67	33
3	67	33
4	67	33
5	67	33
6	67	33
7	67	33
8	68	32
9	68	32
10	68	32
11	68	32
12	68	32
13	70	30
14	70	30
15	70	30
16	70	30
17	70	30
18	70	30
19	70	30
20	70	30
21	71	29
22	71	29
23	70	30
24	70	30
25	70	30
26	70	30
27	70	30
28	71	29
29	71	29
30	70	30
31	71	29

	Rain chance (%)
1	22
2	22
3	23
4	23
5	24
6	24
7	25
8	25
9	25
10	26
11	26
12	26
13	26
14	27
15	27
16	28
17	28
18	29
19	29
20	29
21	30
22	30
23	30
24	30
25	30
26	31
27	31
28	31
29	32
30	32
31	33

	Dry (%)	Comfortable (%)	Humid (%)
1	98	2	0
2	98	2	0
3	98	2	0
4	97	3	0
5	97	3	0
6	96	4	0
7	96	4	0
8	95	5	0
9	95	5	0
10	94	6	0
11	94	6	0
12	93	6	1
13	93	6	1
14	92	7	1
15	92	7	1
16	92	7	1
17	92	7	1
18	92	7	1
19	92	7	1
20	91	8	1
21	91	8	1
22	91	8	1
23	91	8	1
24	90	9	1
25	90	9	1
26	90	9	1
27	90	9	1
28	88	10	2
29	88	10	2
30	88	10	2
31	87	11	2

	Avg high (°C)	Avg low (°C)
1	22	10
2	22	10
3	22	10
4	22	10
5	23	11
6	23	11
7	23	11
8	23	11
9	23	11
10	23	11
11	23	11
12	23	11
13	23	12
14	24	12
15	24	12
16	24	12
17	24	12
18	24	12
19	24	12
20	24	12
21	24	12
22	24	12
23	24	13
24	24	13
25	24	13
26	24	13
27	25	13
28	25	13
29	25	13
30	25	13
31	25	13

	Clearer (%)	Cloudier (%)
1	67	33
2	67	33
3	67	33
4	67	33
5	67	33
6	67	33
7	67	33
8	68	32
9	68	32
10	68	32
11	68	32
12	68	32
13	70	30
14	70	30
15	70	30
16	70	30
17	70	30
18	70	30
19	70	30
20	70	30
21	71	29
22	71	29
23	70	30
24	70	30
25	70	30
26	70	30
27	70	30
28	71	29
29	71	29
30	70	30
31	71	29

	Rain chance (%)
1	22
2	22
3	23
4	23
5	24
6	24
7	25
8	25
9	25
10	26
11	26
12	26
13	26
14	27
15	27
16	28
17	28
18	29
19	29
20	29
21	30
22	30
23	30
24	30
25	30
26	31
27	31
28	31
29	32
30	32
31	33

	Dry (%)	Comfortable (%)	Humid (%)
1	98	2	0
2	98	2	0
3	98	2	0
4	97	3	0
5	97	3	0
6	96	4	0
7	96	4	0
8	95	5	0
9	95	5	0
10	94	6	0
11	94	6	0
12	93	6	1
13	93	6	1
14	92	7	1
15	92	7	1
16	92	7	1
17	92	7	1
18	92	7	1
19	92	7	1
20	91	8	1
21	91	8	1
22	91	8	1
23	91	8	1
24	90	9	1
25	90	9	1
26	90	9	1
27	90	9	1
28	88	10	2
29	88	10	2
30	88	10	2
31	87	11	2

	Avg high (°C)	Avg low (°C)
1	22	10
2	22	10
3	22	10
4	22	10
5	23	11
6	23	11
7	23	11
8	23	11
9	23	11
10	23	11
11	23	11
12	23	11
13	23	12
14	24	12
15	24	12
16	24	12
17	24	12
18	24	12
19	24	12
20	24	12
21	24	12
22	24	12
23	24	13
24	24	13
25	24	13
26	24	13
27	25	13
28	25	13
29	25	13
30	25	13
31	25	13

	Clearer (%)	Cloudier (%)
1	67	33
2	67	33
3	67	33
4	67	33
5	67	33
6	67	33
7	67	33
8	68	32
9	68	32
10	68	32
11	68	32
12	68	32
13	70	30
14	70	30
15	70	30
16	70	30
17	70	30
18	70	30
19	70	30
20	70	30
21	71	29
22	71	29
23	70	30
24	70	30
25	70	30
26	70	30
27	70	30
28	71	29
29	71	29
30	70	30
31	71	29

	Rain chance (%)
1	22
2	22
3	23
4	23
5	24
6	24
7	25
8	25
9	25
10	26
11	26
12	26
13	26
14	27
15	27
16	28
17	28
18	29
19	29
20	29
21	30
22	30
23	30
24	30
25	30
26	31
27	31
28	31
29	32
30	32
31	33

	Dry (%)	Comfortable (%)	Humid (%)
1	98	2	0
2	98	2	0
3	98	2	0
4	97	3	0
5	97	3	0
6	96	4	0
7	96	4	0
8	95	5	0
9	95	5	0
10	94	6	0
11	94	6	0
12	93	6	1
13	93	6	1
14	92	7	1
15	92	7	1
16	92	7	1
17	92	7	1
18	92	7	1
19	92	7	1
20	91	8	1
21	91	8	1
22	91	8	1
23	91	8	1
24	90	9	1
25	90	9	1
26	90	9	1
27	90	9	1
28	88	10	2
29	88	10	2
30	88	10	2
31	87	11	2