San Antonio de Areco weather in January

In January, San Antonio de Areco sees average daytime highs of 29°C and overnight lows near 18°C, with 92 mm of rain across 8.1 wet days and about 14 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 52% of the time in January, and the air most often feels muggy.

Daylight stretches from about 14 h 18 min at the start of January to 13 h 42 min by month's end. Set against the rest of the year, January is San Antonio de Areco's 1st-clearest and 9th-windiest month. For the whole year in context, see San Antonio de Areco's year-round climate.

Daytime high
29°
1st warmest
Overnight low
18°
12th coldest
Rainfall
92 mm
8.1 wet days
Daylight
14 h 06 min
6:06 AM – 8:09 PM
Cloud cover
43%
1st clearest
Wind
12 km/h
9th windiest
Solar energy
7.25 kWh/m²
Travel score
5.7
out of 10

San Antonio de Areco is town in Buenos Aires Province, Argentina.

Founded
1730

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical January day in San Antonio de Areco reaches about 29°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 34°C. Set against its neighbours, January runs about 1°C warmer than December and about 1°C warmer than February.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12918
22918
33018
43018
53018
63018
73018
83018
93018
103018
113018
123018
133018
143018
153018
163018
173018
183018
193018
202918
212918
222918
232918
242918
252918
262918
272918
282918
292918
302918
312918

San Antonio de Areco weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 18°928.1145.7
Feb28° / 17°1058.213.36.3
Mar26° / 16°937.112.37.3
Apr23° / 12°100811.27.3
May19° / 645.810.26.6
Jun16° / 495.79.85.4
Jul15° / 515.79.95.1
Aug17° / 595.510.76.3
Sep19° / 706.211.86.8
Oct22° / 12°1259.512.96.9
Nov26° / 14°1007.913.87.2
Dec28° / 17°988.914.26.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 33%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26535
36634
46634
56535
66535
76634
86634
96733
106733
116733
126733
136832
146832
156832
166832
176832
186931
196931
206832
216832
226931
236832
246832
256733
266733
276634
286634
296535
306535
316535

Chance of precipitation in January

Any precipitation

San Antonio de Areco gets around 92 mm of rain over 8.1 wet days in January. 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 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
228
328
428
528
627
727
827
927
1026
1126
1226
1325
1425
1524
1624
1724
1824
1924
2024
2124
2224
2325
2426
2526
2627
2728
2829
2929
3030
3131

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 30% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11521282970
21421283070
31421283070
41421283070
51521283070
61521283060
71521283060
81521283060
91621283060
101621283060
111621283060
121621273060
131621273060
141621273060
151621273060
161621273060
171621273060
181621273060
191621273060
201620273060
211620273060
221619283161
231619283161
241518283171
251518283271
261517283271
271517273271
281517273281
291516273281
301516273291
311516273191

Wind in January

Winds average 12 km/h in January.

Across January, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 18 min at the start of January to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over January. Sunrise moves from 5:54 AM to 6:20 AM, and sunset from 8:09 PM to 8:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.35:548:09
214.25:548:09
314.25:558:09
414.25:568:09
514.25:568:09
614.25:578:09
714.25:588:09
814.25:598:09
914.26:008:09
1014.26:008:09
1114.16:018:09
1214.16:028:09
1314.16:038:09
1414.16:048:09
1514.16:058:09
1614.16:068:09
1714.06:068:09
1814.06:078:08
1914.06:088:08
2014.06:098:08
2114.06:108:07
2213.96:118:07
2313.96:128:07
2413.96:138:06
2513.96:148:06
2613.86:158:05
2713.86:168:05
2813.86:178:04
2913.86:188:04
3013.76:198:03
3113.76:208:03

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.25 kWh/m².

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 7.41 kWh/m² in December across the year — January's 7.25 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.3Intense
47.3Intense
57.3Intense
67.3Intense
77.3Intense
87.3Intense
97.3Intense
107.3Intense
117.3Intense
127.3Intense
137.3Intense
147.3Intense
157.3Intense
167.3Intense
177.3Intense
187.3Intense
197.3Intense
207.2Intense
217.2Intense
227.2Intense
237.2Intense
247.1Intense
257.1Intense
267.0Intense
277.0Intense
286.9Intense
296.9Intense
306.8Intense
316.8Intense
Planning a trip in January

Is January a good time to visit San Antonio de Areco?

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

5.7
Sightseeing
10th-best month of the year
7.5
Beach & pool
1st-best month of the year

January is a reasonable time to visit San Antonio de Areco for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Antonio de Areco in January

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

In January, San Antonio de Areco sees daytime highs around 29°C and nights near 18°C. Pack light clothes and sun protection. Worth having: rain gear. About 8 days see rain.

light clothessun protectionrain gear

UV index in San Antonio de Areco in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Antonio de Areco peaks around January 14 at about 13 (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 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 14UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme

Air quality in San Antonio de Areco in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in San Antonio de Areco is worst in August — around 20 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (November, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateGoodAug 1619 µg/m³Nov 2310 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb11Good
Mar12Moderate
Apr11Good
May14Moderate
Jun16Moderate
Jul16Moderate
Aug20Moderate
Sep15Moderate
Oct13Moderate
Nov10Good
Dec11Good
Location & terrain

Where is San Antonio de Areco?

San Antonio de Areco sits at 34.3°S, 59.5°W, 35 m above sea level, in Argentina. The nearest listed city is Carmen de Areco, 35 km away.

Topography around San Antonio de Areco

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Antonio de Areco.

Within 3 km, the terrain around San Antonio de Areco has only modest variations in elevation — a maximum elevation change of 24 m around an average of 29 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 58 m; within 80 km, only modest variations in elevation — a maximum elevation change of 94 m.

The land around San Antonio de Areco is covered by grassland (41%) and cropland (30%) within 3 km, cropland (81%) within 16 km, and cropland (54%) and grassland (20%) within 80 km.

3 km
24 m
16 km
58 m
80 km
94 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Carmen de Areco 35 km · Zárate 44 km · Mercedes 45 km · Luján 48 km · Campana 48 km · Baradero 49 km · Pilar 56 km · Arrecifes 62 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 San Antonio de Areco (-34.2508°, -59.4694°, elevation 35 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. 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).