Miramar weather in December

In December, Miramar sees average daytime highs of 21°C and overnight lows near 15°C, with 67 mm of rain across 7.7 wet days and about 14.6 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 22°C by the end. The sky is clear or mostly clear about 52% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of December to 14 h 36 min by month's end. Set against the rest of the year, December is Miramar's 2nd-clearest and 4th-windiest month. For the whole year in context, see Miramar's year-round climate.

Daytime high
21°
3rd warmest
Overnight low
15°
9th coldest
Rainfall
67 mm
7.7 wet days
Daylight
14 h 42 min
5:28 AM – 8:07 PM
Cloud cover
43%
2nd clearest
Wind
21 km/h
4th windiest
Solar energy
7.62 kWh/m²
Travel score
7.1
out of 10

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.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 22°C by the end.

A typical December day in Miramar reaches about 21°C in the afternoon and slips back to 15°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 26°C. Set against its neighbours, December runs about 3°C warmer than November and about 2°C cooler than January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12014
22014
32014
42014
52014
62014
72014
82014
92015
102015
112115
122115
132115
142115
152115
162115
172115
182115
192216
202216
212216
222216
232216
242216
252216
262216
272216
282216
292217
302317
312317

Miramar weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

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

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46337
56337
66436
76436
86337
96337
106337
116337
126337
136337
146436
156535
166535
176634
186634
196733
206733
216832
226931
236931
246832
256832
266832
276931
286931
296832
306733
316733

Chance of precipitation in December

Any precipitation

Miramar gets around 67 mm of rain over 7.7 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 28% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
227
327
427
526
626
726
826
925
1025
1125
1224
1324
1424
1524
1624
1724
1824
1924
2024
2124
2224
2325
2425
2525
2625
2725
2825
2925
3026
3126

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 41% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
15632120
25632120
35432131
45333131
55233141
65233141
75133151
85034151
94934161
104934161
114834172
124734172
134634182
144534183
154434193
164334203
174134214
184034224
193933235
203733256
213632266
223432277
233331287
243231308
253030319
262930329
2728293310
2827293411
2926283511
3025283511
3124283512

Wind in December

Winds average 21 km/h in December.

Across December, daily wind ranges from about 21 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy
3121breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 30 min at the start of December to 14 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 5:27 AM to 5:36 AM, and sunset from 7:55 PM to 8:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.55:277:55
214.55:277:56
314.55:277:57
414.55:277:58
514.55:277:59
614.65:278:00
714.65:278:00
814.65:278:01
914.65:278:02
1014.65:278:03
1114.65:278:04
1214.65:278:04
1314.65:278:05
1414.65:278:06
1514.65:288:06
1614.75:288:07
1714.75:288:08
1814.75:298:08
1914.75:298:09
2014.75:298:09
2114.75:308:10
2214.75:308:10
2314.75:318:11
2414.75:318:11
2514.75:328:12
2614.75:328:12
2714.75:338:12
2814.75:348:13
2914.65:348:13
3014.65:358:13
3114.65:368:13

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.62 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.89 kWh/m² to a high of 7.62 kWh/m² in December across the year — December's 7.62 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.4Intense
27.4Intense
37.5Intense
47.5Intense
57.5Intense
67.5Intense
77.5Intense
87.5Intense
97.6Intense
107.6Intense
117.6Intense
127.6Intense
137.6Intense
147.6Intense
157.6Intense
167.7Intense
177.7Intense
187.7Intense
197.7Intense
207.7Intense
217.7Intense
227.7Intense
237.7Intense
247.7Intense
257.7Intense
267.7Intense
277.7Intense
287.6Intense
297.6Intense
307.6Intense
317.6Intense
Planning a trip in December

Is December a good time to visit Miramar?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.1
Sightseeing
3rd-best month of the year
4.4
Beach & pool
3rd-best month of the year

December is one of the better times to visit Miramar for general sightseeing.

What to pack for Miramar in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Miramar sees daytime highs around 21°C and nights near 15°C. Pack sun protection. Worth having: a windbreaker. About 8 days see rain.

sun protectiona windbreaker

Sea temperature near Miramar in December

The nearest coast averages about 17°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

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 in Miramar in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

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
Location & terrain

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
December weather 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).