Climate and average weather in Miramar

In Miramar, the summers are warm, showery, 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 Miramar typically varies from 7°C to 23°C, and is rarely below 4°C or above 27°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 Miramar for warm-weather activities are from early January to late April and mid November to late December.

Hottest
Jan
23°
Coldest
Jul
Wettest
Apr
79 mm
Driest
May
53 mm
Rain / yr
825 mm
97 wet days
Daylight
9.3–14.7 h
shortest–longest
Elevation
14 m
38.3°S
Clearest
Jan
43% cloud

Miramar is city located on the coast of the Atlantic Ocean in Buenos Aires Province.

Founded
1888

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

Miramar 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 Miramar, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.8 months, from December 6 to March 30, with daily high temperatures above 20°C. The hottest month of the year in Miramar is January, with an average high of 23°C and low of 17°C.

The cool season lasts 3.8 months, from June 2 to September 25, with daily high temperatures below 14°C. The coldest month of the year in Miramar is July, with an average low of 7°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)
Jan2317
Feb2317
Mar2116
Apr1814
May1511
Jun138
Jul117
Aug128
Sep138
Oct1510
Nov1813
Dec2115

Average hourly temperature in Miramar

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 23°C, and coldest before dawn in July, near C.

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

Miramar 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
Jan23° / 17°738.314.47.4
Feb23° / 17°767.713.57.2
Mar21° / 16°748.412.36.9
Apr18° / 14°798.9116.1
May15° / 11°537.5104.9
Jun13° / 647.99.43.5
Jul11° / 6089.63.0
Aug12° / 637.310.53.5
Sep13° / 617.811.73.9
Oct15° / 10°788.9134.9
Nov18° / 13°77914.16.2
Dec21° / 15°677.714.67.1

Chance of rain

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

Miramar gets about 825 mm of precipitation a year. On a typical day the chance of rain is some rain, and that barely changes with the seasons — rain is spread fairly evenly through the year.

April is the wettest month by volume, with 79 mm over about 9 wet days; May is the driest, with 53 mm.

0%10%20%30%40%JanFebMarAprMayJunJulAugSepOctNovDecmostly drysome rainoften wetNov 7 · 32%May 9 · 23%
Rain on a day (%)Rain days
Jan278
Feb278
Mar278
Apr299
May248
Jun278
Jul268
Aug247
Sep268
Oct299
Nov309
Dec258

Monthly rainfall

Over a full year, Miramar collects about 825 mm of rain across 97 wet days — roughly 69 mm in an average month.

It doesn’t fall evenly. April is the wettest month with 79 mm, while May is the driest at just 53 mm. The three wettest months alone bring about 28% of the year’s total.

0255075100JanFebMarAprMayJunJulAugSepOctNovDec737674795364606361787767
Rainfall (mm)Rain days
Jan738
Feb768
Mar748
Apr799
May538
Jun648
Jul608
Aug637
Sep618
Oct789
Nov779
Dec678

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Miramar, 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 October 22 and lasts for 5.9 months, ending around April 20. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 67% of the time on average.

The cloudier part of the year begins around April 21 and lasts for 6.0 months, ending around October 21. The cloudiest month is June, when it is overcast or mostly cloudy 57% 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 18 · 68%Jun 11 · 42%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan6733
Feb6436
Mar6040
Apr5545
May4456
Jun4357
Jul4456
Aug4852
Sep4951
Oct5347
Nov6139
Dec6634

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 16, brings about 14 h 42 min of light; the shortest, around June 17, 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)
Jan14.45:498:12
Feb13.56:227:50
Mar12.36:527:10
Apr11.07:216:22
May10.07:505:46
Jun9.48:115:32
Jul9.68:105:44
Aug10.57:406:11
Sep11.76:536:38
Oct13.06:067:07
Nov14.15:337:40
Dec14.65:288:07

Sunny days

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

Miramar averages about 12 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 8 and 16 days.

The sunnier stretch runs 5.6 months, from around Oct 28 to Apr 14. The sunniest month is December, with roughly 16 sunny days (bright).

The greyest month is July, down near 9 sunny days — about 44% fewer than the December peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightDec 2216 daysJul 128 days
Sunny daysSky
Jan16Bright
Feb13Mixed
Mar14Mixed
Apr12Mixed
May9Mixed
Jun9Mixed
Jul9Mixed
Aug10Mixed
Sep10Mixed
Oct11Mixed
Nov13Mixed
Dec16Bright

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

The more humid part of the year lasts 4.0 months, from around December 7 to April 7. The muggiest month is February, when the air feels humid, muggy or worse about 54% of the time.

The most comfortable stretch runs from around April 8 to December 6, 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 7 · 100%Feb 17 · 45%muggyhumidcomfortabledryhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
Jan242633160
Feb242231211
Mar332828101
Apr6327920
May8513200
Jun973000
Jul991000
Aug991000
Sep982000
Oct9010100
Nov6827500
Dec41322250

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 Miramar is steady company: average speeds sit near 21 km/hbreezy — in every month of the year, with no meaningful windy or calm season.

051015202530JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezebreezywindyJun 13 · 22 km/hMar 2 · 20 km/h
Wind speed (km/h)Feels
Jan21breezy
Feb21breezy
Mar20breezy
Apr21breezy
May21breezy
Jun22breezy
Jul22breezy
Aug21breezy
Sep21breezy
Oct21breezy
Nov21breezy
Dec21breezy

Best time to visit Miramar

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around mid April, Miramar 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 Miramar for general outdoor tourist activities is from mid November to late April, with a peak score in the first week of January.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationJan 1 · 7.4

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
Jan7.4good
Feb7.2good
Mar6.9good
Apr6.1good
May4.9fair
Jun3.5fair
Jul3.0poor
Aug3.5poor
Sep3.9fair
Oct4.9fair
Nov6.2good
Dec7.1good

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 Miramar for hot-weather activities is from mid December to mid March, with a peak score in the last week of January.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJan 24 · 5.6

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 Miramar, 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 23°C), the essentials are light clothes, rain gear, sun protection and a windbreaker. In the cold season around July (highs near 11°C), pack a warm layer, rain gear and a windbreaker.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In January, Miramar sees daytime highs around 23°C and nights near 17°C. Pack sun protection. Worth having: light clothes, rain gear and a windbreaker. About 8 days see rain.

Sea temperature near Miramar

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 February at about 20°C and coldest in August near 10°C.

It's comfortable for a long swim from Feb 7 to Feb 26 — about 0.7 months when the water holds above 20°C.

10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan20Cool
Feb20Refreshing
Mar20Cool
Apr18Cool
May15Cool
Jun13Bracing
Jul11Bracing
Aug10Bracing
Sep11Bracing
Oct12Bracing
Nov15Bracing
Dec17Cool

UV index (midday) in Miramar 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 Miramar peaks around December 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 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 highModerateModerateVery highExtremeDec 21UV 12Jun 20UV 2
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar8Very high
Apr5High
May3Moderate
Jun2Low
Jul2Moderate
Aug3Moderate
Sep5Moderate
Oct7Very high
Nov10Extreme
Dec12Extreme

Average hourly UV index in Miramar

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 hours a day reach index 3 (protection recommended), and 6.5 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
Sep50
Oct73.5
Nov8.55.5
Dec96.5
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Miramar 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. Miramar banks about 1,668 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.

05001,0001,500JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan306
Feb278
Mar269
Apr177
May96
Jun15
Jul0
Aug2
Sep22
Oct89
Nov161
Dec253

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.

Miramar receives about 4.6 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 1.9 and 7.7 kWh/m².

The brighter stretch of the year lasts 5.8 months, from around Sep 25 to Mar 20. The brightest month is December, averaging about 7.6 kWh/m² (intense).

The dimmest month is June, down near 1.9 kWh/m² — roughly 75% less than the December peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseDec 227.7 kWhJun 191.9 kWh
Solar energy (kWh/m²)Level
Jan7.4Intense
Feb6.3Intense
Mar4.9Bright
Apr3.4Moderate
May2.4Moderate
Jun1.9Dim
Jul2.1Moderate
Aug3.0Moderate
Sep4.3Bright
Oct5.6Bright
Nov6.9Intense
Dec7.6Intense

Where is Miramar?

Miramar sits at 38.3°S, 57.8°W, 14 m above sea level, in Argentina. The nearest listed city is Mar del Plata, 39 km away.

Topography around Miramar

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

Within 3 km, the terrain around Miramar has only modest variations in elevation — a maximum elevation change of 43 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 69 m; within 80 km, significant variations in elevation — a maximum elevation change of 386 m.

The land around Miramar is covered by water (30%) and grassland (24%) within 3 km, water (47%) and cropland (37%) within 16 km, and cropland (38%), water (38%) and grassland (22%) within 80 km.

3 km
43 m
16 km
69 m
80 km
386 m
treesgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Mar del Plata 39 km · Santa Clara del Mar 57 km · Balcarce 60 km · Necochea 85 km · Villa Gesell 135 km · Ayacucho 137 km · General Juan Madariaga 154 km · Pinamar 155 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 Miramar (-38.2716°, -57.8389°, elevation 14 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).