Arroyo Seco weather in January

In January, Arroyo Seco sees average daytime highs of 30°C and overnight lows near 19°C, with 105 mm of rain across 8 wet days and about 13.9 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 50% of the time in January, and the air most often feels muggy.

Daylight stretches from about 14 h 12 min at the start of January to 13 h 36 min by month's end. Set against the rest of the year, January is Arroyo Seco's 1st-clearest and 10th-windiest month. For the whole year in context, see Arroyo Seco's year-round climate.

Daytime high
30°
1st warmest
Overnight low
19°
12th coldest
Rainfall
105 mm
8 wet days
Daylight
14 hours
6:12 AM – 8:10 PM
Cloud cover
43%
1st clearest
Wind
11 km/h
10th windiest
Solar energy
7.24 kWh/m²
Travel score
5.5
out of 10

Arroyo Seco is town in Santa Fe Province, Argentina.

Density
146/km²
people per km²
Founded
1888

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 30°C through the month.

A typical January day in Arroyo Seco reaches about 30°C in the afternoon and slips back to 19°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 26°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)
13019
23019
33019
43019
53019
63019
73019
83019
93019
103019
113019
123019
133019
143019
153019
163019
173019
183019
193019
203019
213019
223019
233019
243019
253019
263019
273019
283019
293019
303019
313019

Arroyo Seco weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°105813.95.5
Feb29° / 18°1118.213.26.0
Mar27° / 17°1217.412.37.1
Apr23° / 13°1048.211.27.4
May19° / 10°675.910.36.8
Jun16° / 424.99.95.8
Jul16° / 395.1105.6
Aug18° / 544.810.86.8
Sep21° / 10°65611.87.2
Oct23° / 13°1139.812.87.1
Nov26° / 15°113813.77.1
Dec29° / 18°107914.25.9

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of January, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36238
46337
56436
66436
76535
86535
96535
106634
116733
126733
136733
146832
156832
166832
176832
186832
196832
206832
216832
226832
236931
246733
256733
266634
276634
286535
296535
306436
316436

Chance of precipitation in January

Any precipitation

Arroyo Seco gets around 105 mm of rain over 8 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 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
627
727
827
927
1027
1127
1226
1326
1426
1525
1625
1725
1825
1924
2024
2125
2225
2325
2426
2526
2627
2728
2828
2929
3030
3130

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
19202631131
29202631141
39202631141
49202631141
59192632141
69192632141
79192732131
89182732131
99182832131
109182832130
119172932120
129172932120
139163032120
1410163132110
1510163132110
1610163232110
1710153233100
1810153233100
1910153233100
2010153233100
2110153233110
229153133110
239153133110
249153133120
259153033121
2610152933121
2710152933131
2810152833141
2910152833141
3010152733151
3110152732151

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 12 min at the start of January to 13 h 36 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 6:01 AM to 6:26 AM, and sunset from 8:10 PM to 8:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.26:018:10
214.16:018:10
314.16:028:10
414.16:038:10
514.16:038:11
614.16:048:11
714.16:058:11
814.16:068:11
914.16:068:11
1014.16:078:11
1114.06:088:11
1214.06:098:11
1314.06:108:11
1414.06:118:11
1514.06:118:11
1614.06:128:10
1713.96:138:10
1813.96:148:10
1913.96:158:10
2013.96:168:09
2113.96:178:09
2213.96:188:09
2313.86:198:08
2413.86:208:08
2513.86:208:08
2613.86:218:07
2713.76:228:07
2813.76:238:06
2913.76:248:06
3013.76:258:05
3113.66:268:05

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.24 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 7.33 kWh/m² in December across the year — January's 7.24 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.2Intense
47.2Intense
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
207.3Intense
217.3Intense
227.2Intense
237.2Intense
247.2Intense
257.1Intense
267.1Intense
277.0Intense
287.0Intense
296.9Intense
306.9Intense
316.8Intense
Planning a trip in January

Is January a good time to visit Arroyo Seco?

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

5.5
Sightseeing
12th-best month of the year
7.4
Beach & pool
1st-best month of the year

January is a reasonable time to visit Arroyo Seco for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Arroyo Seco in January

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

In January, Arroyo Seco sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 8 days see rain.

light clothessun protectionrain gear

UV index in Arroyo Seco in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arroyo Seco peaks around January 15 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 15UV 13Jun 19UV 3
UV index (midday)Level
Jan14Extreme
Feb12Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct9Very high
Nov11Extreme
Dec12Extreme

Air quality in Arroyo Seco 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 Arroyo Seco is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (April, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 2220 µg/m³Apr 157 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb8Good
Mar8Good
Apr7Good
May8Good
Jun10Good
Jul13Moderate
Aug20Moderate
Sep19Moderate
Oct10Good
Nov8Good
Dec8Good
Location & terrain

Where is Arroyo Seco?

Arroyo Seco sits at 33.2°S, 60.5°W, 31 m above sea level, in Argentina. The nearest listed city is Gobernador Gálvez, 18 km away.

Topography around Arroyo Seco

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

Within 3 km, the terrain around Arroyo Seco has only modest variations in elevation — a maximum elevation change of 29 m around an average of 22 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, only modest variations in elevation — a maximum elevation change of 101 m.

The land around Arroyo Seco is covered by cropland (46%) and grassland (23%) within 3 km, cropland (53%) and wetland (23%) within 16 km, and cropland (57%) and wetland (27%) within 80 km.

3 km
29 m
16 km
59 m
80 km
101 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Gobernador Gálvez 18 km · Villa Constitución 19 km · Rosario 26 km · Pérez 29 km · San Nicolás de los Arroyos 34 km · Granadero Baigorria 38 km · Capitán Bermúdez 42 km · Ramallo 60 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 Arroyo Seco (-33.1536°, -60.5117°, elevation 31 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).