La Plata weather in December

In December, La Plata sees average daytime highs of 27°C and overnight lows near 17°C, with 82 mm of rain across 8.5 wet days and about 14.3 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 26°C in the first days to 28°C by the end. The sky is clear or mostly clear about 51% of the time in December, and the air most often feels humid.

Daylight stretches from about 14 h 12 min at the start of December to 14 h 18 min by month's end. Set against the rest of the year, December is La Plata's 2nd-clearest and 4th-windiest month. For the whole year in context, see La Plata's year-round climate.

Daytime high
27°
3rd warmest
Overnight low
17°
10th coldest
Rainfall
82 mm
8.5 wet days
Daylight
14 h 18 min
5:38 AM – 7:58 PM
Cloud cover
44%
2nd clearest
Wind
14 km/h
4th windiest
Solar energy
7.59 kWh/m²
Travel score
6.9
out of 10

La Plata is capital of the Buenos Aires province, Argentina.

Density
7,239/km²
people per km²
Founded
1882

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 26°C in the first days to 28°C by the end.

A typical December day in La Plata reaches about 27°C in the afternoon and slips back to 17°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 32°C. Set against its neighbours, December runs about 3°C warmer than November and about 1°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12616
22616
32616
42616
52616
62616
72616
82616
92616
102716
112716
122717
132717
142717
152717
162717
172717
182717
192717
202817
212818
222818
232818
242818
252818
262818
272818
282818
292818
302818
312818

La Plata 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
Jan28° / 19°92814.16.3
Feb27° / 18°868.713.36.7
Mar25° / 16°847.612.37.4
Apr22° / 13°867.611.17.1
May18° / 10°606.110.26.3
Jun15° / 6269.74.9
Jul14° / 646.39.94.5
Aug16° / 686.210.75.5
Sep18° / 726.911.86.3
Oct21° / 12°1029.612.96.6
Nov24° / 14°938.613.87.2
Dec27° / 17°828.514.36.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% 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 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16238
26337
36436
46436
56535
66436
76535
86535
96535
106535
116535
126535
136535
146436
156436
166535
176535
186535
196535
206535
216535
226535
236535
246535
256535
266535
276535
286535
296535
306535
316535

Chance of precipitation in December

Any precipitation

La Plata gets around 82 mm of rain over 8.5 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 28% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
225
325
425
526
626
726
826
926
1026
1127
1227
1328
1428
1529
1629
1729
1829
1929
2029
2129
2229
2329
2429
2529
2629
2729
2829
2928
3028
3128

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 20% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
139262690
239252690
3392526100
4382527101
5382527101
6372427101
7362428111
8362528111
9352528111
10342529111
11332529121
12322530121
13312530121
14302530131
15292531142
16282431152
17272431162
18262332172
19252232192
20242232202
21232132212
22222032233
23211932243
24201932253
25191832264
26181832274
27181732284
28171732295
29161732305
30161731306
31151731316

Wind in December

Winds average 14 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 12 min at the start of December to 14 h 18 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 5:36 AM to 5:45 AM, and sunset from 7:47 PM to 8:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:367:47
214.25:367:48
314.25:367:49
414.25:367:49
514.25:367:50
614.25:367:51
714.35:367:52
814.35:367:53
914.35:367:53
1014.35:377:54
1114.35:377:55
1214.35:377:55
1314.35:377:56
1414.35:377:57
1514.35:387:57
1614.35:387:58
1714.35:387:59
1814.35:397:59
1914.35:398:00
2014.35:398:00
2114.35:408:01
2214.35:408:01
2314.35:418:02
2414.35:418:02
2514.35:428:03
2614.35:428:03
2714.35:438:03
2814.35:448:04
2914.35:448:04
3014.35:458:04
3114.35:458:04

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.59 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.27 kWh/m² to a high of 7.59 kWh/m² in December across the year — December's 7.59 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.5Intense
27.5Intense
37.5Intense
47.5Intense
57.5Intense
67.6Intense
77.6Intense
87.6Intense
97.6Intense
107.6Intense
117.6Intense
127.6Intense
137.6Intense
147.6Intense
157.6Intense
167.6Intense
177.6Intense
187.6Intense
197.6Intense
207.6Intense
217.6Intense
227.6Intense
237.6Intense
247.6Intense
257.6Intense
267.5Intense
277.5Intense
287.5Intense
297.5Intense
307.5Intense
317.5Intense
Planning a trip in December

Is December a good time to visit La Plata?

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

6.9
Sightseeing
4th-best month of the year
7.1
Beach & pool
2nd-best month of the year

December is a reasonable time to visit La Plata for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for La Plata in December

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

In December, La Plata sees daytime highs around 27°C and nights near 17°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

Sea temperature near La Plata in December

The nearest coast averages about 23°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 January at about 25°C and coldest in July near 12°C.

It's comfortable for a long swim from Nov 10 to Apr 15 — about 5.2 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar23Refreshing
Apr20Refreshing
May17Cool
Jun13Bracing
Jul12Bracing
Aug13Bracing
Sep15Bracing
Oct18Cool
Nov21Refreshing
Dec23Refreshing

UV index in La Plata 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 La Plata peaks around January 15 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 15UV 12Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is La Plata?

La Plata sits at 34.9°S, 58.0°W, 27 m above sea level, in Argentina. The nearest listed city is Ensenada, 8.0 km away.

Topography around La Plata

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

Within 3 km, the terrain around La Plata has only modest variations in elevation — a maximum elevation change of 28 m around an average of 18 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 52 m; within 80 km, only modest variations in elevation — a maximum elevation change of 116 m.

The land around La Plata is covered by artificial surfaces (85%) within 3 km, grassland (47%) within 16 km, and water (36%), grassland (33%) and cropland (20%) within 80 km.

3 km
28 m
16 km
52 m
80 km
116 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Ensenada 8.0 km · Berisso 9.0 km · Berazategui 29 km · Quilmes 35 km · Coronel Brandsen 38 km · Adrogué 41 km · Burzaco 42 km · Monte Chingolo 42 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 La Plata (-34.9213°, -57.9544°, elevation 27 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).