Climate and average weather in Nueve de Julio

In Nueve de Julio, the summers are hot, showery, and mostly clear and the winters are cool and partly cloudy.

Best: mid August to late May

Over the course of the year, the temperature in Nueve de Julio typically varies from 4°C to 29°C, and is rarely below -1°C or above 33°C. January is the hottest month of the year, while July is the coldest.

Based on the travel score, the best time of year to visit Nueve de Julio for warm-weather activities is from mid August to late May.

Hottest
Jan
29°
Coldest
Jul
Wettest
Jan
111 mm
Driest
Jul
35 mm
Rain / yr
966 mm
87 wet days
Daylight
9.6–14.4 h
shortest–longest
Elevation
79 m
35.4°S
Clearest
Jan
40% cloud

Nueve de Julio is city in Buenos Aires Province.

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

Nueve de Julio 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 May.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

The hot season lasts 4.1 months, from November 16 to March 19, with daily high temperatures above 25°C. The hottest month of the year in Nueve de Julio is January, with an average high of 29°C and low of 17°C.

The cool season lasts 2.8 months, from May 25 to August 16, with daily high temperatures below 17°C. The coldest month of the year in Nueve de Julio is July, with an average low of 4°C and high of 14°C.

Days typically run about 11°C warmer than nights year-round.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2917
Feb2817
Mar2515
Apr2211
May188
Jun155
Jul144
Aug176
Sep198
Oct2211
Nov2513
Dec2816

Average hourly temperature in Nueve de Julio

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

Nueve de Julio 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° / 17°1118.814.16.1
Feb28° / 17°98813.36.9
Mar25° / 15°1078.112.37.3
Apr22° / 11°987.911.17.1
May18° / 55610.26.3
Jun15° / 354.69.75.0
Jul14° / 354.59.94.7
Aug17° / 444.510.76.1
Sep19° / 676.511.86.7
Oct22° / 11°1099.912.96.8
Nov25° / 13°105913.97.2
Dec28° / 16°1018.814.36.5

Chance of rain

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

Nueve de Julio gets about 966 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 7.0 months, from around Sep 24 to Apr 25, peaking in October at about 32% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 1.

January is the wettest month by volume, with 111 mm over about 9 wet days; July is the driest, with 35 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetOct 19 · 32%Aug 1 · 12%
Rain on a day (%)Rain days
Jan299
Feb288
Mar278
Apr268
May206
Jun165
Jul145
Aug155
Sep227
Oct3110
Nov309
Dec299

Monthly rainfall

Over a full year, Nueve de Julio collects about 966 mm of rain across 87 wet days — roughly 80 mm in an average month.

It doesn’t fall evenly. January is the wettest month with 111 mm, while July is the driest at just 35 mm. The three wettest months alone bring about 34% of the year’s total.

0255075100125150JanFebMarAprMayJunJulAugSepOctNovDec11198107985535354467109105101
Rainfall (mm)Rain days
Jan1119
Feb988
Mar1078
Apr988
May556
Jun355
Jul355
Aug445
Sep677
Oct10910
Nov1059
Dec1019

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Nueve de Julio, 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 4 and lasts for 5.1 months, ending around April 8. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 70% of the time on average.

The cloudier part of the year begins around April 9 and lasts for 6.9 months, ending around November 3. The cloudiest month is May, when it is overcast or mostly cloudy 52% 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 · 72%May 24 · 44%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan7030
Feb6733
Mar6535
Apr5842
May4852
Jun4951
Jul5149
Aug5644
Sep5545
Oct5347
Nov6238
Dec6832

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 12, 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)
Jan14.16:088:17
Feb13.36:387:58
Mar12.37:057:22
Apr11.17:316:37
May10.27:566:04
Jun9.78:155:52
Jul9.98:146:04
Aug10.77:486:27
Sep11.87:046:51
Oct12.96:217:16
Nov13.95:527:46
Dec14.35:488:11

Sunny days

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

Nueve de Julio 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 5.0 months, from around Nov 8 to Apr 8. The sunniest month is January, with roughly 17 sunny days (bright).

The greyest month is May, down near 11 sunny days — about 38% fewer than the January peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantJan 2118 daysMay 2510 days
Sunny daysSky
Jan18Bright
Feb15Bright
Mar15Mixed
Apr14Mixed
May11Mixed
Jun11Mixed
Jul12Mixed
Aug13Mixed
Sep12Mixed
Oct12Mixed
Nov14Mixed
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 Nueve de Julio, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 4.3 months, from around November 27 to April 6. 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 7 to November 26, 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 12 · 100%Jan 30 · 38%muggycomfortablehumiddryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan192331234
Feb202129265
Mar312726142
Apr65211040
May8311610
Jun944200
Jul963000
Aug944200
Sep936100
Oct7420610
Nov56271420
Dec372625112

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 Nueve de Julio 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/hFeb 17 · 12 km/h
Wind speed (km/h)Feels
Jan13light breeze
Feb12light breeze
Mar12light breeze
Apr13light breeze
May12light breeze
Jun13light breeze
Jul13light breeze
Aug14light breeze
Sep14light breeze
Oct14light breeze
Nov14light breeze
Dec13light breeze

Best time to visit Nueve de Julio

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late August, Nueve de Julio 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 time of year to visit Nueve de Julio for general outdoor tourist activities is from mid August to late May, with a peak score in the last week of March.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationMar 25 · 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
Jan6.1good
Feb6.8good
Mar7.3good
Apr7.2good
May6.3good
Jun5.0fair
Jul4.7fair
Aug6.0good
Sep6.6good
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 Nueve de Julio for hot-weather activities is from early November to late March, with a peak score in the first week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 2 · 7.5

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 Nueve de Julio, 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, Nueve de Julio sees daytime highs around 29°C and nights near 17°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

UV index (midday) in Nueve de Julio 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 Nueve de Julio peaks around January 13 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 13UV 13Jun 20UV 2
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar9Very high
Apr6High
May3Moderate
Jun2Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Average hourly UV index in Nueve de Julio

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%)

Nueve de Julio is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about August 9 to June 16 (312 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freereliably frost-freeAug 990%Jun 1690%
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May980
Jun9113
Jul8431
Aug927
Sep980
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. Nueve de Julio banks about 2,314 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)
Jan399
Feb335
Mar311
Apr199
May98
Jun8
Jul0
Aug36
Sep97
Oct190
Nov274
Dec367

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.

Nueve de Julio receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.2 and 7.5 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Sep 23 to Mar 20. 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 187.5 kWhJun 192.2 kWh
Solar energy (kWh/m²)Level
Jan7.3Intense
Feb6.4Intense
Mar5.0Bright
Apr3.6Moderate
May2.6Moderate
Jun2.2Moderate
Jul2.4Moderate
Aug3.4Moderate
Sep4.5Bright
Oct5.6Bright
Nov6.9Intense
Dec7.5Intense

Where is Nueve de Julio?

Nueve de Julio sits at 35.4°S, 60.9°W, 79 m above sea level, in Argentina. The nearest listed city is Carlos Casares, 48 km away.

Topography around Nueve de Julio

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

Within 3 km, the terrain around Nueve de Julio has only modest variations in elevation — a maximum elevation change of 19 m around an average of 75 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 38 m; within 80 km, only modest variations in elevation — a maximum elevation change of 70 m.

The land around Nueve de Julio is covered by cropland (35%), artificial surfaces (26%) and grassland (24%) within 3 km, cropland (73%) and grassland (22%) within 16 km, and cropland (72%) and grassland (25%) within 80 km.

3 km
19 m
16 km
38 m
80 km
70 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Carlos Casares 48 km · Bragado 51 km · Los Toldos 51 km · Veinticinco de Mayo 65 km · Lincoln 87 km · San Carlos de Bolívar 90 km · Junín 95 km · Chacabuco 97 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 Nueve de Julio (-35.4439°, -60.8846°, elevation 79 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).