Climate and average weather in Pehuajó

In Pehuajó, the summers are hot, showery, and mostly clear and the winters are cool and partly cloudy.

Best: mid August to late December

Over the course of the year, the temperature in Pehuajó typically varies from 4°C to 29°C, and is rarely below -1°C or above 34°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 Pehuajó for warm-weather activities are from mid January to late May and mid August to late December.

Hottest
Jan
29°
Coldest
Jul
Wettest
Oct
108 mm
Driest
Jul
27 mm
Rain / yr
917 mm
86 wet days
Daylight
9.6–14.4 h
shortest–longest
Elevation
85 m
35.8°S
Clearest
Jan
38% cloud

Pehuajó is city in Buenos Aires Province, Argentina.

Founded
1881

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

Pehuajó 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 mid August to late December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Pehuajó, 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 16 to March 17, with daily high temperatures above 25°C. The hottest month of the year in Pehuajó is January, with an average high of 29°C and low of 18°C.

The cool season lasts 2.9 months, from May 23 to August 17, with daily high temperatures below 17°C. The coldest month of the year in Pehuajó is July, with an average low of 4°C and high of 14°C.

Days typically run about 10°C warmer than nights year-round.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2918
Feb2817
Mar2515
Apr2212
May188
Jun145
Jul144
Aug166
Sep198
Oct2211
Nov2514
Dec2816

Average hourly temperature in Pehuajó

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 C.

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

Pehuajó 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
Jan29° / 18°1089.514.25.9
Feb28° / 17°978.313.46.8
Mar25° / 15°1068.212.37.3
Apr22° / 12°887.711.17.1
May18° / 455.410.16.3
Jun14° / 3049.64.9
Jul14° / 274.19.84.6
Aug16° / 414.310.66.0
Sep19° / 656.311.86.7
Oct22° / 11°10810.412.96.7
Nov25° / 14°1038.813.97.2
Dec28° / 16°100914.46.5

Chance of rain

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

Pehuajó gets about 917 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 6.8 months, from around Sep 24 to Apr 18, peaking in October at about 34% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 30.

October is the wettest month by volume, with 108 mm over about 10 wet days; July is the driest, with 27 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetOct 24 · 34%Jun 30 · 12%
Rain on a day (%)Rain days
Jan3010
Feb308
Mar278
Apr258
May185
Jun144
Jul134
Aug154
Sep216
Oct3210
Nov309
Dec299

Monthly rainfall

Over a full year, Pehuajó collects about 917 mm of rain across 86 wet days — roughly 76 mm in an average month.

It doesn’t fall evenly. October is the wettest month with 108 mm, while July is the driest at just 27 mm. The three wettest months alone bring about 35% of the year’s total.

0255075100125JanFebMarAprMayJunJulAugSepOctNovDec10897106884530274165108103100
Rainfall (mm)Rain days
Jan10810
Feb978
Mar1068
Apr888
May455
Jun304
Jul274
Aug414
Sep656
Oct10810
Nov1039
Dec1009

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Pehuajó, 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 1 and lasts for 5.0 months, ending around April 2. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 73% of the time on average.

The cloudier part of the year begins around April 3 and lasts for 4.4 months, ending around August 14. The cloudiest month is May, when it is overcast or mostly cloudy 51% 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%JanFebMarAprMayJunJulAugSepOctNovDecJan 21 · 75%May 22 · 45%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan7327
Feb6931
Mar6436
Apr5842
May4951
Jun5050
Jul5248
Aug5842
Sep5644
Oct5545
Nov6436
Dec7129

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 January 1, brings about 14 h 24 min of light; the shortest, around June 9, 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)
Jan14.26:128:22
Feb13.46:428:03
Mar12.37:097:26
Apr11.17:356:41
May10.18:006:07
Jun9.68:205:55
Jul9.88:196:07
Aug10.67:536:31
Sep11.87:096:55
Oct12.96:257:20
Nov13.95:557:51
Dec14.45:518:16

Sunny days

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

Pehuajó averages about 14 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 10 and 18 days.

The sunnier stretch runs 4.9 months, from around Nov 8 to Apr 6. The sunniest month is January, with roughly 18 sunny days (bright).

The greyest month is May, down near 11 sunny days — about 37% fewer than the January peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantJan 2118 daysMay 2410 days
Sunny daysSky
Jan18Bright
Feb15Bright
Mar16Bright
Apr14Mixed
May11Mixed
Jun11Mixed
Jul12Mixed
Aug14Mixed
Sep13Mixed
Oct13Mixed
Nov15Mixed
Dec17Bright

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 Pehuajó, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 4.4 months, from around November 24 to April 5. The muggiest month is January, when the air feels humid, muggy or worse about 58% of the time.

The most comfortable stretch runs from around April 6 to November 23, and July 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%JanFebMarAprMayJunJulAugSepOctNovDecJul 11 · 100%Jan 28 · 38%muggyhumidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan192332225
Feb202128264
Mar312824152
Apr6522940
May8511500
Jun954100
Jul973000
Aug963100
Sep945100
Oct7420500
Nov56281320
Dec372526102

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 Pehuajó 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 breezeOct 3 · 14 km/hMay 15 · 12 km/h
Wind speed (km/h)Feels
Jan12light breeze
Feb12light breeze
Mar12light breeze
Apr12light breeze
May12calm
Jun12calm
Jul12light breeze
Aug13light breeze
Sep14light breeze
Oct14light breeze
Nov13light breeze
Dec13light breeze

Best time to visit Pehuajó

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late August, Pehuajó is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

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 Pehuajó for general outdoor tourist activities run from late January to late May and again from mid August to late December, with a peak score in the last week of March.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationMar 24 · 7.5

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
Jan6.0good
Feb6.8good
Mar7.3good
Apr7.1good
May6.3good
Jun4.9fair
Jul4.7fair
Aug6.0good
Sep6.7good
Oct6.8good
Nov7.2good
Dec6.5good

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 Pehuajó for hot-weather activities is from early November to late March, with a peak score in the last week of December.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationDec 27 · 7.6

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 Pehuajó, 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 29°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 14°C), pack a warm layer.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, Pehuajó sees daytime highs around 29°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

UV index (midday) in Pehuajó 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 Pehuajó peaks around January 12 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 12UV 13Jun 20UV 2
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar9Very high
Apr6High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep5High
Oct8Very high
Nov11Extreme
Dec13Extreme

Average hourly UV index in Pehuajó

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
Feb8.56
Mar7.55
Apr5.50
May2.50
Jun00
Jul00
Aug30
Sep5.50
Oct74
Nov8.56
Dec97
Almanac & agriculture

Growing season

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

Pehuajó 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 25 (323 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freereliably frost-freeAug 790%Jun 2590%
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May980
Jun927
Jul8631
Aug936
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. Pehuajó banks about 2,364 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

01,0002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan410
Feb344
Mar317
Apr198
May93
Jun5
Jul0
Aug35
Sep103
Oct198
Nov283
Dec379

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.

Pehuajó receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.2 and 7.6 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Sep 22 to Mar 19. The brightest month is December, averaging about 7.5 kWh/m² (intense).

The dimmest month is June, down near 2.2 kWh/m² — roughly 70% less than the December peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 207.6 kWhJun 192.2 kWh
Solar energy (kWh/m²)Level
Jan7.4Intense
Feb6.4Intense
Mar5.0Bright
Apr3.6Moderate
May2.6Moderate
Jun2.3Moderate
Jul2.5Moderate
Aug3.4Moderate
Sep4.6Bright
Oct5.7Bright
Nov7.0Intense
Dec7.6Intense

Where is Pehuajó?

Pehuajó sits at 35.8°S, 61.9°W, 85 m above sea level, in Argentina. The nearest listed city is Carlos Casares, 53 km away.

Topography around Pehuajó

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

Within 3 km, the terrain around Pehuajó has only modest variations in elevation — a maximum elevation change of 15 m around an average of 85 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 29 m; within 80 km, only modest variations in elevation — a maximum elevation change of 69 m.

The land around Pehuajó is covered by grassland (33%), cropland (28%) and artificial surfaces (25%) within 3 km, cropland (66%) and grassland (28%) within 16 km, and cropland (72%) and grassland (23%) within 80 km.

3 km
15 m
16 km
29 m
80 km
69 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Carlos Casares 53 km · Trenque Lauquen 77 km · San Carlos de Bolívar 85 km · Nueve de Julio 100 km · Lincoln 110 km · Los Toldos 119 km · General Villegas 133 km · Bragado 149 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 Pehuajó (-35.8108°, -61.899°, elevation 85 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).