San Martín weather in October

In October, San Martín sees average daytime highs of 26°C and overnight lows near 14°C, with 20 mm of rain across 3.9 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 24°C in the first days to 28°C by the end. The sky is clear or mostly clear about 65% 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 Martín's 4th-clearest and 1st-windiest month. For the whole year in context, see San Martín's year-round climate.

Daytime high
26°
6th warmest
Overnight low
14°
7th coldest
Rainfall
20 mm
3.9 wet days
Daylight
12 h 48 min
6:54 AM – 7:44 PM
Cloud cover
33%
4th clearest
Wind
12 km/h
1st windiest
Solar energy
6.51 kWh/m²
Travel score
8.1
out of 10

San Martín is city in the Mendoza Province, Argentina.

Density
55/km²
people per km²
Founded
1816

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 24°C in the first days to 28°C by the end.

A typical October day in San Martín reaches about 26°C in the afternoon and slips back to 14°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 32°C. Set against its neighbours, October runs about 4°C warmer than September and about 4°C cooler than November.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12412
22412
32412
42412
52512
62512
72512
82513
92513
102513
112613
122613
132613
142613
152614
162614
172614
182714
192714
202714
212714
222714
232714
242715
252715
262715
272815
282815
292815
302815
312815

How October really feels in San Martín

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

San Martín 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.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 21°487.813.94.0
Feb31° / 19°376.313.25.0
Mar28° / 17°436.212.36.9
Apr23° / 12°204.311.28.2
May19° / 132.610.37.2
Jun15° / 61.39.95.9
Jul15° / 61.6105.9
Aug18° / 101.910.87.6
Sep22° / 10°122.311.88.4
Oct26° / 14°203.912.88.1
Nov30° / 17°275.113.76.1
Dec32° / 19°386.714.14.4

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 65% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 22%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17624
27624
37624
47624
57525
67525
77624
87525
97525
107624
117624
127723
137723
147822
157822
167822
177822
187921
197921
208020
218020
228119
238119
248020
258020
268119
278119
288119
298119
308119
318119

Chance of precipitation in October

Any precipitation

San Martín gets around 20 mm of rain over 3.9 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 12% and peaks near 14% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
111
211
312
412
512
612
712
812
912
1012
1112
1212
1311
1411
1511
1612
1712
1812
1912
2012
2112
2212
2312
2412
2513
2613
2713
2813
2914
3014
3114

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
4991
5991
6991
7991
8991
9982
10982
11982
12973
13973
14973
15973
16973
17973
18973
19973
20973
21973
22973
23973
24973
25973
26973
27973
28964
29964
30964
31964

Wind in October

Winds average 12 km/h in October, the windiest month of the year.

Across October, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light 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 7:13 AM to 6:38 AM, and sunset from 7:33 PM to 7:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.37:137:33
212.47:127:33
312.47:107:34
412.47:097:35
512.57:087:35
612.57:067:36
712.57:057:37
812.67:047:38
912.67:037:38
1012.67:017:39
1112.77:007:40
1212.76:597:41
1312.76:587:42
1412.86:567:42
1512.86:557:43
1612.86:547:44
1712.96:537:45
1812.96:527:46
1912.96:507:46
2013.06:497:47
2113.06:487:48
2213.06:477:49
2313.16:467:50
2413.16:457:51
2513.16:447:51
2613.26:437:52
2713.26:427:53
2813.26:417:54
2913.26:407:55
3013.36:397:56
3113.36:387:57

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 6.51 kWh/m².

For context, solar energy here swings from a low near 2.86 kWh/m² to a high of 7.86 kWh/m² in December across the year — October's 6.51 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
15.9Bright
26.0Bright
36.0Intense
46.0Intense
56.1Intense
66.1Intense
76.2Intense
86.2Intense
96.3Intense
106.3Intense
116.4Intense
126.4Intense
136.5Intense
146.5Intense
156.5Intense
166.6Intense
176.6Intense
186.7Intense
196.7Intense
206.7Intense
216.8Intense
226.8Intense
236.8Intense
246.8Intense
256.9Intense
266.9Intense
276.9Intense
287.0Intense
297.0Intense
307.0Intense
317.1Intense
Planning a trip in October

Is October a good time to visit San Martín?

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

8.1
Sightseeing
3rd-best month of the year
7.8
Beach & pool
2nd-best month of the year

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

What to pack for San Martín in October

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

In October, San Martín sees daytime highs around 26°C and nights near 14°C. Pack sun protection. Worth having: light clothes. About 4 days see rain.

sun protectionlight clothes

UV index in San Martín 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 Martín peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateHighVery highExtremeJan 18UV 14Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar10Extreme
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct10Very high
Nov12Extreme
Dec13Extreme
Location & terrain

Where is San Martín?

San Martín sits at 33.1°S, 68.5°W, 656 m above sea level, in Argentina. The nearest listed city is Rivadavia, 12 km away.

Topography around San Martín

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Martín.

Within 3 km, the terrain around San Martín has only modest variations in elevation — a maximum elevation change of 18 m around an average of 658 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,924 m.

The land around San Martín is covered by artificial surfaces (44%) within 3 km, cropland (38%), shrubs (25%) and grassland (25%) within 16 km, and shrubs (69%) within 80 km.

3 km
18 m
16 km
67 m
80 km
2,924 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
October weather nearby: Rivadavia 12 km · Rodeo del Medio 22 km · Perdriel 39 km · Mendoza 41 km · Tupungato 70 km · Tunuyán 75 km · Pocito 156 km · Caucete 160 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
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 1%

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 Martín (-33.0834°, -68.4731°, elevation 656 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).