Climate and average weather in Punta Alta

In Punta Alta, the summers are warm, fairly dry, and mostly clear and the winters are cool, breezy, and partly cloudy.

Best: early January to late April

Over the course of the year, the temperature in Punta Alta typically varies from 6°C to 26°C, and is rarely below 3°C or above 30°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 Punta Alta for warm-weather activities are from early January to late April and late October to late December.

Hottest
Jan
26°
Coldest
Jul
Wettest
Mar
66 mm
Driest
Jun
29 mm
Rain / yr
581 mm
71 wet days
Daylight
9.3–14.7 h
shortest–longest
Elevation
3 m
38.9°S
Clearest
Jan
32% cloud

Punta Alta is city in Buenos Aires Province, Argentina.

Founded
2019

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

Punta Alta 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 early January to late April.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Punta Alta, 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 24 to March 21, with daily high temperatures above 22°C. The hottest month of the year in Punta Alta is January, with an average high of 26°C and low of 19°C.

The cool season lasts 3.5 months, from May 26 to September 7, with daily high temperatures below 14°C. The coldest month of the year in Punta Alta is July, with an average low of 6°C and high of 11°C.

Days typically run about 5°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2619
Feb2519
Mar2317
Apr1914
May1511
Jun128
Jul116
Aug127
Sep159
Oct1812
Nov2115
Dec2418

Average hourly temperature in Punta Alta

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 26°C, and coldest before dawn in July, near C.

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

Punta Alta 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
Jan26° / 19°486.514.47.8
Feb25° / 19°616.413.57.9
Mar23° / 17°666.612.37.7
Apr19° / 14°555.9116.8
May15° / 11°385.29.95.2
Jun12° / 294.39.33.7
Jul11° / 345.29.63.1
Aug12° / 354.810.53.9
Sep15° / 435.911.74.9
Oct18° / 12°607.2136.3
Nov21° / 15°586.914.17.3
Dec24° / 18°545.914.78.0

Chance of rain

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

Punta Alta gets about 581 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 2.6 months, from around Sep 18 to Dec 6, peaking in November at about 25% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 4.

March is the wettest month by volume, with 66 mm over about 7 wet days; June is the driest, with 29 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetNov 9 · 25%Jun 4 · 13%
Rain on a day (%)Rain days
Jan207
Feb236
Mar227
Apr206
May165
Jun154
Jul175
Aug155
Sep206
Oct247
Nov237
Dec196

Monthly rainfall

Over a full year, Punta Alta collects about 581 mm of rain across 71 wet days — roughly 48 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 66 mm, while June is the driest at just 29 mm. The three wettest months alone bring about 32% of the year’s total.

0255075100JanFebMarAprMayJunJulAugSepOctNovDec486166553829343543605854
Rainfall (mm)Rain days
Jan487
Feb616
Mar667
Apr556
May385
Jun294
Jul345
Aug355
Sep436
Oct607
Nov587
Dec546

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Punta Alta, 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 5.3 months, ending around April 3. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 79% of the time on average.

The cloudier part of the year begins around April 4 and lasts for 6.7 months, ending around October 25. The cloudiest month is May, when it is overcast or mostly cloudy 50% 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 20 · 79%May 21 · 47%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan7921
Feb7624
Mar7129
Apr6238
May5050
Jun5248
Jul5347
Aug5644
Sep5743
Oct5941
Nov6931
Dec7624

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 42 min of light; the shortest, around June 10, only 9 h 18 min — a swing of roughly 5 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan14.46:048:31
Feb13.56:388:08
Mar12.37:097:27
Apr11.07:396:38
May9.98:086:01
Jun9.38:305:47
Jul9.68:286:00
Aug10.57:586:26
Sep11.77:106:55
Oct13.06:227:24
Nov14.15:497:58
Dec14.75:438:26

Sunny days

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

Punta Alta averages about 15 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 10 and 20 days.

The sunnier stretch runs 5.0 months, from around Nov 10 to Apr 11. The sunniest month is January, with roughly 20 sunny days (bright).

The greyest month is May, down near 11 sunny days — about 45% fewer than the January peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantJan 1920 daysMay 2210 days
Sunny daysSky
Jan20Bright
Feb18Bright
Mar18Bright
Apr14Mixed
May11Mixed
Jun11Mixed
Jul12Mixed
Aug13Mixed
Sep13Mixed
Oct14Mixed
Nov16Bright
Dec19Bright

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 Punta Alta, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 4.2 months, from around November 29 to April 4. The muggiest month is February, when the air feels humid, muggy or worse about 43% of the time.

The most comfortable stretch runs from around April 5 to November 28, and June 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%JanFebMarAprMayJunJulAugSepOctNovDecJun 4 · 100%Feb 17 · 56%muggyhumidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan303028120
Feb292827151
Mar40282390
Apr7321610
May928100
Jun1000000
Jul1000000
Aug1000000
Sep991000
Oct909100
Nov6924700
Dec48291850

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 Punta Alta is steady company: average speeds sit near 20 km/hbreezy — in every month of the year, with no meaningful windy or calm season.

0510152025JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezebreezyDec 17 · 22 km/hMay 13 · 19 km/h
Wind speed (km/h)Feels
Jan22breezy
Feb21breezy
Mar20light breeze
Apr20light breeze
May19light breeze
Jun20breezy
Jul20breezy
Aug20light breeze
Sep20light breeze
Oct20breezy
Nov21breezy
Dec22breezy

Best time to visit Punta Alta

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid April, Punta Alta 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 time of year to visit Punta Alta for general outdoor tourist activities is from late October to late April, with a peak score in the third week of December.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationDec 17 · 8.1

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
Jan7.8ideal
Feb7.8ideal
Mar7.7ideal
Apr6.8good
May5.2fair
Jun3.7fair
Jul3.1poor
Aug3.9fair
Sep4.9fair
Oct6.2good
Nov7.3good
Dec8.0ideal

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 Punta Alta for hot-weather activities is from early December to mid March, with a peak score in the second week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationJan 12 · 7.4

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 Punta Alta, 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 26°C), the essentials are light clothes, sun protection and a windbreaker. In the cold season around July (highs near 11°C), pack a warm layer and a windbreaker.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, Punta Alta sees daytime highs around 26°C and nights near 19°C. Pack sun protection. Worth having: light clothes and a windbreaker. About 7 days see rain.

Sea temperature near Punta Alta

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea offshore is warmest in January at about 22°C and coldest in August near 9°C.

It's comfortable for a long swim from Dec 8 to Mar 20 — about 3.4 months when the water holds above 20°C.

5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar21Refreshing
Apr17Cool
May14Bracing
Jun11Bracing
Jul9Bracing
Aug9Bracing
Sep11Bracing
Oct15Bracing
Nov18Cool
Dec21Refreshing

UV index (midday) in Punta Alta 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 Punta Alta peaks around December 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighModerateModerateVery highExtremeDec 19UV 12Jun 21UV 2
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar8Very high
Apr6High
May3Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep5Moderate
Oct7Very high
Nov10Extreme
Dec13Extreme

Average hourly UV index in Punta Alta

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 December the burn window is concentrated in the middle of the day: about 9.5 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)
Jan96.5
Feb8.56
Mar74
Apr50
May10
Jun00
Jul00
Aug00
Sep4.50
Oct73.5
Nov8.56
Dec9.57
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Punta Alta is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
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. Punta Alta banks about 2,100 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.

05001,0001,5002,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan387
Feb331
Mar307
Apr189
May88
Jun6
Jul0
Aug6
Sep57
Oct152
Nov240
Dec337

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.

Punta Alta receives about 4.8 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 1.9 and 7.9 kWh/m².

The brighter stretch of the year lasts 5.7 months, from around Sep 26 to Mar 19. The brightest month is December, averaging about 7.8 kWh/m² (intense).

The dimmest month is June, down near 2.0 kWh/m² — roughly 75% less than the December peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 257.9 kWhJun 191.9 kWh
Solar energy (kWh/m²)Level
Jan7.7Intense
Feb6.5Intense
Mar5.0Bright
Apr3.5Moderate
May2.4Moderate
Jun1.9Dim
Jul2.2Moderate
Aug3.1Moderate
Sep4.4Bright
Oct5.7Bright
Nov7.2Intense
Dec7.9Intense

Where is Punta Alta?

Punta Alta sits at 38.9°S, 62.1°W, 3 m above sea level, in Argentina. The nearest listed city is Bahía Blanca, 25 km away.

Carmen de PatagonesViedma

Topography around Punta Alta

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

Within 3 km, the terrain around Punta Alta has only modest variations in elevation — a maximum elevation change of 31 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 81 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,217 m.

The land around Punta Alta is covered by grassland (39%) and artificial surfaces (31%) within 3 km, water (31%), grassland (24%) and cropland (22%) within 16 km, and cropland (36%), grassland (31%) and water (22%) within 80 km.

3 km
31 m
16 km
81 m
80 km
1,217 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
Nearby: Bahía Blanca 25 km · Coronel Pringles 118 km · Pigüé 145 km · Coronel Suárez 159 km · Tres Arroyos 166 km · Río Colorado 175 km · Carmen de Patagones 227 km · Viedma 229 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 Punta Alta (-38.8805°, -62.075°, elevation 3 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).