Climate and average weather in General Alvear

In General Alvear, the summers are hot, showery, and mostly clear and the winters are mild and mostly clear.

Best: late July to mid November

Over the course of the year, the temperature in General Alvear typically varies from 3°C to 33°C, and is rarely below -1°C or above 38°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 General Alvear for warm-weather activities are from mid March to late May and late July to mid November.

Hottest
Jan
33°
Coldest
Jul
Wettest
Oct
57 mm
Driest
Jun
13 mm
Rain / yr
452 mm
67 wet days
Daylight
9.6–14.4 h
shortest–longest
Elevation
471 m
35.0°S
Clearest
Dec
31% cloud

General Alvear is city in Mendoza Province, Argentina.

Founded
1914

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

General Alvear 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 mid November.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in General Alvear, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.9 months, from November 14 to March 13, with daily high temperatures above 29°C. The hottest month of the year in General Alvear is January, with an average high of 33°C and low of 19°C.

The cool season lasts 3.1 months, from May 15 to August 17, with daily high temperatures below 19°C. The coldest month of the year in General Alvear is July, with an average low of 3°C and high of 15°C.

Days typically run about 13°C warmer than nights year-round.

10°20°30°40°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan3319
Feb3118
Mar2816
Apr2311
May198
Jun164
Jul153
Aug185
Sep219
Oct2512
Nov2915
Dec3218

How hot and cold General Alvear really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the hottest afternoons, once humidity is folded in, General Alvear feels like about 33°C (around January 13). About 49 days a year carry some heat stress, peaking in January.

On the coldest nights, wind chill pulls the feels-like down to about -0°C (around July 15), with roughly 7 freezing days a year (feels-like at or below 0°C), worst in July.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan33331919
Feb31311818
Mar28281616
Apr23231111
May191958
Jun161624
Jul151503
Aug181825
Sep212169
Oct25251212
Nov29291515
Dec32321818

Average hourly temperature in General Alvear

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 33°C, and coldest before dawn in July, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

General Alvear weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 19°478.914.13.9
Feb31° / 18°527.113.34.9
Mar28° / 16°536.712.36.8
Apr23° / 11°395.111.17.9
May19° / 253.810.26.9
Jun16° / 132.79.75.8
Jul15° / 132.49.95.8
Aug18° / 183.110.77.3
Sep21° / 284.211.87.7
Oct25° / 12°577.312.97.6
Nov29° / 15°497.213.86.5
Dec32° / 18°578.114.34.7

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

General Alvear gets about 452 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 6.5 months, from around Sep 26 to Apr 10, peaking in January at about 29% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jul 21.

October is the wettest month by volume, with 57 mm over about 7 wet days; June is the driest, with 13 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetJan 19 · 29%Jul 21 · 7%
Rain on a day (%)Rain days
Jan289
Feb267
Mar227
Apr175
May124
Jun93
Jul82
Aug103
Sep154
Oct227
Nov257
Dec268

Monthly rainfall

Over a full year, General Alvear collects about 452 mm of rain across 67 wet days — roughly 38 mm in an average month.

It doesn’t fall evenly. October is the wettest month with 57 mm, while June is the driest at just 13 mm. The three wettest months alone bring about 37% of the year’s total.

0255075JanFebMarAprMayJunJulAugSepOctNovDec475253392513131828574957
Rainfall (mm)Rain days
Jan479
Feb527
Mar537
Apr395
May254
Jun133
Jul132
Aug183
Sep284
Oct577
Nov497
Dec578

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In General Alvear, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around October 26 and lasts for 4.9 months, ending around March 24. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 87% of the time on average.

The cloudier part of the year begins around March 25 and lasts for 7.1 months, ending around October 25. The cloudiest month is May, when it is overcast or mostly cloudy 41% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecDec 23 · 88%May 20 · 56%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan8713
Feb8317
Mar7624
Apr6931
May5941
Jun6337
Jul6832
Aug7228
Sep7129
Oct7129
Nov8020
Dec8515

Daylight, sunrise and sunset

DaylightNight

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 December 19, brings about 14 h 24 min of light; the shortest, around June 20, only 9 h 36 min — a swing of roughly 4 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan14.16:378:43
Feb13.37:068:25
Mar12.37:327:49
Apr11.17:577:05
May10.28:226:32
Jun9.78:416:21
Jul9.98:416:32
Aug10.78:156:55
Sep11.87:327:19
Oct12.96:497:43
Nov13.86:208:12
Dec14.36:178:37

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

General Alvear averages about 18 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 13 and 23 days.

The sunnier stretch runs 5.4 months, from around Oct 20 to Apr 2. The sunniest month is December, with roughly 22 sunny days (bright).

The greyest month is May, down near 14 sunny days — about 36% fewer than the December peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantDec 2323 daysMay 2313 days
Sunny daysSky
Jan22Bright
Feb19Bright
Mar20Bright
Apr17Bright
May14Mixed
Jun14Mixed
Jul16Bright
Aug18Bright
Sep16Bright
Oct17Bright
Nov19Bright
Dec22Bright

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

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 General Alvear, how humid it feels changes noticeably over the year.

The more humid part of the year lasts 3.7 months, from around December 7 to March 30. The muggiest month is January, when the air feels humid, muggy or worse about 21% of the time.

The most comfortable stretch runs from around March 31 to December 6, and May is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecMay 6 · 100%Jan 24 · 77%humidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)
Jan5919165
Feb5524156
Mar6123133
Apr871120
May98200
Jun100000
Jul100000
Aug100000
Sep100000
Oct95410
Nov871120
Dec721891

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.

Wind in General Alvear is steady company: average speeds sit near 13 km/hlight breeze — in every month of the year, with no meaningful windy or calm season.

05101520JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeNov 1 · 14 km/hMay 26 · 12 km/h
Wind speed (km/h)Feels
Jan14light breeze
Feb13light breeze
Mar13light breeze
Apr12light breeze
May12calm
Jun12calm
Jul12light breeze
Aug13light breeze
Sep14light breeze
Oct14light breeze
Nov14light breeze
Dec14light breeze

Best time to visit General Alvear

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in General Alvear throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around early November, General Alvear 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 General Alvear for general outdoor tourist activities run from mid March to late May and again from late July to mid November, with a peak score in the third week of April.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationApr 15 · 8.0

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).

Travel score (0–10)Rating
Jan4.0fair
Feb4.9fair
Mar6.8good
Apr7.9ideal
May7.0good
Jun5.8good
Jul5.9good
Aug7.2good
Sep7.7ideal
Oct7.6ideal
Nov6.5good
Dec4.7fair

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 General Alvear for hot-weather activities is from early October to mid April, with a peak score in the second week of March.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationMar 11 · 7.9

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 General Alvear, by month

EssentialRecommendedOptional

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 33°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 15°C), pack a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, General Alvear sees daytime highs around 33°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

UV index (midday) in General Alvear by month

LowModerateHighVery highExtreme

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 General Alvear peaks around January 18 at about 13 (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 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateVery highExtremeJan 18UV 13Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar10Very high
Apr5High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct9Very high
Nov12Extreme
Dec12Extreme

Average hourly UV index in General Alvear

LowModerateHighVery highExtreme

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.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan97
Feb96.5
Mar7.55
Apr5.50
May2.50
Jun00
Jul00
Aug3.50
Sep5.50
Oct7.55
Nov96.5
Dec97
Almanac & agriculture

Growing season

Chance of a frost-free dayReliably frost-free (≥90%)

General Alvear is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about August 8 to June 30 (327 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freereliably frost-freeAug 890%Jun 3090%
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May990
Jun944
Jul8631
Aug938
Sep990
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

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. General Alvear banks about 2,866 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,0003,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan500
Feb412
Mar370
Apr216
May95
Jun7
Jul0
Aug54
Sep147
Oct256
Nov353
Dec456

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.

General Alvear receives about 5.3 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.5 and 8.1 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Sep 20 to Mar 17. The brightest month is December, averaging about 8.0 kWh/m² (intense).

The dimmest month is June, down near 2.6 kWh/m² — roughly 68% less than the December peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 228.1 kWhJun 192.5 kWh
Solar energy (kWh/m²)Level
Jan7.9Intense
Feb6.8Intense
Mar5.3Bright
Apr3.9Moderate
May2.9Moderate
Jun2.6Moderate
Jul2.9Moderate
Aug3.9Moderate
Sep5.1Bright
Oct6.3Intense
Nov7.6Intense
Dec8.1Intense

Where is General Alvear?

General Alvear sits at 35.0°S, 67.7°W, 471 m above sea level, in Argentina. The nearest listed city is San Rafael, 71 km away.

RivadaviaSan MartínTupungatoSan LuisPerdriel

Topography around General Alvear

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

Within 3 km, the terrain around General Alvear has only modest variations in elevation — a maximum elevation change of 15 m around an average of 471 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 62 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,336 m.

The land around General Alvear is covered by grassland (49%) and artificial surfaces (23%) within 3 km, shrubs (47%) and grassland (41%) within 16 km, and shrubs (85%) within 80 km.

3 km
15 m
16 km
62 m
80 km
1,336 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
Nearby: San Rafael 71 km · Malargüe 180 km · Tunuyán 197 km · Rivadavia 211 km · San Martín 222 km · Tupungato 223 km · San Luis 226 km · Perdriel 238 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 General Alvear (-34.9775°, -67.6962°, elevation 471 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).