Sarandí weather in December

In December, Sarandí sees average daytime highs of 26°C and overnight lows near 18°C, with 81 mm of rain across 8 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 25°C in the first days to 27°C by the end. The sky is clear or mostly clear about 53% 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 Sarandí's 2nd-clearest and 4th-windiest month. For the whole year in context, see Sarandí's year-round climate.

Daytime high
26°
3rd warmest
Overnight low
18°
10th coldest
Rainfall
81 mm
8 wet days
Daylight
14 h 18 min
5:40 AM – 7:59 PM
Cloud cover
42%
2nd clearest
Wind
16 km/h
4th windiest
Solar energy
7.5 kWh/m²
Travel score
7.3
out of 10

Sarandí is city in the province of Buenos Aires in Argentina.

Density
1,125/km²
people per km²
Founded
1872

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 25°C in the first days to 27°C by the end.

A typical December day in Sarandí reaches about 26°C in the afternoon and slips back to 18°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°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)
12517
22517
32517
42517
52517
62517
72517
82518
92518
102518
112518
122618
132618
142618
152618
162618
172618
182619
192619
202619
212619
222619
232619
242719
252719
262719
272720
282720
292720
302720
312720

Sarandí 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
Jan27° / 20°837.114.17.2
Feb26° / 20°927.813.37.2
Mar24° / 18°887.312.37.6
Apr21° / 15°947.911.27.0
May17° / 11°63610.26.1
Jun14° / 676.49.74.6
Jul13° / 676.89.94.1
Aug15° / 666.410.75.1
Sep17° / 11°747.111.86.0
Oct20° / 13°1099.312.96.5
Nov23° / 16°948.113.87.3
Dec26° / 18°81814.37.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26535
36535
46634
56634
66733
76634
86634
96733
106733
116733
126733
136634
146634
156634
166733
176634
186634
196634
206634
216634
226634
236634
246733
256733
266733
276733
286733
296733
306634
316634

Chance of precipitation in December

Any precipitation

Sarandí gets around 81 mm of rain over 8 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 26% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
124
224
324
424
524
624
724
824
925
1025
1125
1225
1326
1426
1527
1627
1727
1827
1927
2027
2127
2227
2327
2427
2527
2627
2726
2826
2926
3026
3126

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 31% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1282532141
2272432152
3272432152
4272432152
5262432162
6262332162
7252332172
8252332182
9242333183
10232333193
11222333203
12212332213
13202332223
14192332234
15182232244
16172231254
17162131265
18162131276
19152030286
20141930297
21131830308
22131829319
23121729329
241216293310
251216283311
261115283412
271115283412
281015273413
291014273414
30914273415
31914273416

Wind in December

Winds average 16 km/h in December.

Across December, daily wind ranges from about 16 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1016light breeze
1116light breeze
1216light breeze
1316light breeze
1416light breeze
1516light breeze
1616light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light 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 5:38 AM to 5:48 AM, and sunset from 7:48 PM to 8:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:387:48
214.25:387:49
314.25:387:50
414.25:387:50
514.25:387:51
614.25:387:52
714.25:387:53
814.35:387:53
914.35:397:54
1014.35:397:55
1114.35:397:56
1214.35:397:56
1314.35:397:57
1414.35:407:58
1514.35:407:58
1614.35:407:59
1714.35:408:00
1814.35:418:00
1914.35:418:01
2014.35:428:01
2114.35:428:02
2214.35:438:02
2314.35:438:03
2414.35:448:03
2514.35:448:03
2614.35:458:04
2714.35:458:04
2814.35:468:05
2914.35:468:05
3014.35:478:05
3114.35:488:05

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.5 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.25 kWh/m² to a high of 7.5 kWh/m² in December across the year — December's 7.5 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.4Intense
27.4Intense
37.4Intense
47.4Intense
57.5Intense
67.5Intense
77.5Intense
87.5Intense
97.5Intense
107.5Intense
117.5Intense
127.5Intense
137.5Intense
147.5Intense
157.5Intense
167.5Intense
177.5Intense
187.5Intense
197.5Intense
207.5Intense
217.5Intense
227.5Intense
237.5Intense
247.5Intense
257.5Intense
267.5Intense
277.4Intense
287.4Intense
297.4Intense
307.4Intense
317.4Intense
Planning a trip in December

Is December a good time to visit Sarandí?

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

7.3
Sightseeing
2nd-best month of the year
6.9
Beach & pool
3rd-best month of the year

December is one of the better times to visit Sarandí for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Sarandí in December

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

In December, Sarandí sees daytime highs around 26°C and nights near 18°C. Pack sun protection. Worth having: light clothes and rain gear. About 8 days see rain.

sun protectionlight clothesrain gear

Sea temperature near Sarandí 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 13°C.

It's comfortable for a long swim from Nov 9 to Apr 20 — about 5.4 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swimcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar23Refreshing
Apr21Refreshing
May17Cool
Jun14Bracing
Jul13Bracing
Aug13Bracing
Sep15Cool
Oct18Cool
Nov21Refreshing
Dec23Refreshing

UV index in Sarandí 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 Sarandí peaks around January 14 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 14UV 12Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May3Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in Sarandí in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Sarandí is worst in June — around 25 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 12 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJun 2325 µg/m³Dec 1612 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar16Moderate
Apr17Moderate
May22Moderate
Jun25Moderate
Jul25Moderate
Aug24Moderate
Sep19Moderate
Oct16Moderate
Nov13Moderate
Dec12Moderate
Location & terrain

Where is Sarandí?

Sarandí sits at 34.7°S, 58.3°W, 10 m above sea level, in Argentina. The nearest listed city is Avellaneda, 3.0 km away.

Topography around Sarandí

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

Within 3 km, the terrain around Sarandí has only modest variations in elevation — a maximum elevation change of 16 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 53 m; within 80 km, only modest variations in elevation — a maximum elevation change of 138 m.

The land around Sarandí is covered by artificial surfaces (82%) within 3 km, artificial surfaces (59%) and water (30%) within 16 km, and grassland (30%), water (25%) and cropland (21%) within 80 km.

3 km
16 m
16 km
53 m
80 km
138 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Avellaneda 3.0 km · Barracas 5.0 km · Lanús 5.0 km · Monte Chingolo 5.0 km · Valentín Alsina 6.0 km · Remedios de Escalada de San Martín 7.0 km · Buenos Aires 8.0 km · Banfield 8.0 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 Sarandí (-34.6816°, -58.3464°, elevation 10 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).